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#3651 2012-02-08 01:21:18
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solutions #3580 and #3581 are correct. Good work!
#3582. The average of 20 numbers is 12. The average of the first 12 numbers is 11 and that of the next 7 numbers is 10. Find the last number.
#3583. The average weight of 25 persons is increased by 1 kilogram when one man weighing 60 kilograms is replaced by a new person. What is the weight of the new person?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3652 2012-02-08 01:36:45
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3653 2012-02-09 01:26:32
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solutions #3582 and #3583 are correct. Well done!
#3584. Find the number, whose square is equal to the difference of the squares of 75.15 and 60.12.
#3585. Find the least number which when divided by 4, 6, 8, and 9 leaves zero remainder in each case and when divided by 13 leaves a remainder of 7.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3654 2012-02-09 02:46:01
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3655 2012-02-10 01:20:22
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solutions #3584 and #3585 are correct. Brilliant!
#3586. There are 50 students in a class. One of them weighing 50 kilograms leaves and a new student joins. By this, the average weight of the class increases by 0.500 kilograms. Find the weight of the new student.
#3587. A trader wishes to gain 20% after allowing 10% discount on the marled price to his customers. At what percent higher than the cost price must he mark the goods?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3656 2012-02-10 01:33:35
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3657 2012-02-11 01:12:00
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The
The solution #3587 is correct. Good work!
#3588. The length of a rectangular hall is 5 meters more than its breadth. The area of the hall is 750 square meters. Find the length of the hall.
#3589. What is the number of revolutions if the wheel of diameter 40 centimeters travels a distance 176 meters?
(Use
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3658 2012-02-11 06:26:45
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3659 2012-02-12 01:33:53
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solutions #3588 and #3589 are correct. Excellent!
#3590.
#3591.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3660 2012-02-12 03:16:44
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3661 2012-02-13 01:40:00
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solution #3590 is correct. Excellent!
The
#3592. If the cost price of 12 pens is equal to the selling price of 8 pens, what is the gain percent?
#3593. By selling an article of $69, there is a loss of 8 %; when the article is sold for $78, what is the gain or loss percent?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3662 2012-02-13 04:51:38
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi #3592;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3663 2012-02-14 01:38:05
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solutions #3592 (gain 50%) and #3593 (gain 4%) are correct. Excellent!
#3594. On selling 17 balls at $720, there is a loss equal to the cost price of 5 balls. What is the cost price of a ball?
#3595. A train moves past a telegraph post and a bridge 264 meters long in 8 seconds and 20 seconds respectively. What is the speed of the train (in kilometers per hour or meters per second)?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3664 2012-02-14 01:58:00
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3665 2012-02-15 01:45:08
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solution #3595 is correct. Brilliant!
#3596. A boy goes to his school from his house at a speed of 3 km/hour and returns at a speed of 2 km/hour. If he takes 5 hours in going and coming, what is the distance between his house and school?
#3597. A boat goes 40 kilometers upstream in 8 hours and 36 kilometers downstream in 6 hours. Find the speed of the boat in still water.
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3666 2012-02-15 02:12:32
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3667 2012-02-16 01:16:29
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solutions #3596 and #3597 are correct. Intelligent work!
#3598. A circular wire of radius 42 centimeters is bent in the form of a rectangle whose sides are in the ratio 6 : 5. Find the smaller side of the rectangle. (Use
)#3599. If the radius of the base of a cone be doubled and the height is left unchanged, then what is the ratio of the volume of the new cone to that of the original cone?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3668 2012-02-16 07:20:24
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3669 2012-02-17 01:44:46
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solution #3599 is correct. Well done!
#3600. A hollow spherical metallic ball has an external diameter 6 centimeters and is 0.5 centimeter thick. Find the volume of the ball (in cubic centimeters). Use
.#3601. In what time would $1000 become $1331 at 10% per annum compounded annually?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3670 2012-02-17 01:51:19
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3671 2012-02-18 01:17:50
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solution #3601 is correct. Excellent!
#3602. Bananas are bought at the rate of 6 for $5 and sold at the price of 5 for $6. Find the profit percent.
#3603. When the price of eggs is reduced by 20%, it enables a man to buy 20 more eggs for $40. What is the reduced price per egg?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3672 2012-02-18 01:37:07
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
Offline
#3673 2012-02-19 01:22:01
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
The solution #3602 is correct. Excellent!
The solution #3603 is correct (The original price per egg is 50 cents and the reduced price per egg is 40 cents). Excellent again!
#3604. A hollow iron pipe is 21 centimeters long and its exterior diameter is 8 centimeters. If the thickness of the pipe is 1 cm and iron weighs 8 grams/cc, what is the weight of the pipe? (Use
)#3605. A alone can do a piece of work in 6 days and B alone in 8 days. A and B undertook to do it for $3200. With the help of C, they completed the work in 3 days. How much is to be paid to C?
It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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#3674 2012-02-19 01:37:22
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: 10 second questions
Hi ganesh;
Good Afternoon!
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#3675 2012-02-19 02:00:36
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,395
Re: 10 second questions
Hi bobbym,
Good evening!
The solutions #3604 and #3605 are correct. Marvelous!
#3606. Find the area of the incircle of an equilateral triangle of side 42 centimeters. Use
.It appears to me that if one wants to make progress in mathematics, one should study the masters and not the pupils. - Niels Henrik Abel.
Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.
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