10 second questions

Jai Ganesh · 2011-11-26 00:53:17

Hi phrontister and bobbym,

The solutions #3411, #3416, and #3417 are correct, phrontister and bobbym! Magnificent!

#3418. The product of two numbers is 96 and one number is 1½ times the other; find the greater number.

#3419. A sum of money amounts to $1360 in 3 years and to $1720 in 6 years at simple interest per annum. What is the rate of interest?

phrontister · 2011-11-26 01:16:38

Hi ganesh,

bobbym · 2011-11-26 01:27:15

Hi ganesh;

Jai Ganesh · 2011-11-26 23:28:59

Hi phrontister and bobbym,

The solutions #3418 and #3419 are correct. Fantastic!

#3420. By selling an article at $119, a man loses 15%. If he would sell it at $154, what would his gain percent be?

#3421. The sides of a triangle are in the ratio 2:3:4 and its perimeter is 36 centimeters. What is the greatest side of the triangle?

bobbym · 2011-11-26 23:39:17

Hi ganesh;

Jai Ganesh · 2011-11-28 00:24:50

Hi bobbym,

The solutions #3420 and #3421 are correct. Excellent!

#3422. A and B together can do a piece of work in 10 days; B and C in 15 days; and C & A in 20 days. In how many days can A alone do the work?

#3423. If 25 men working 8 hours a day earn $850, then 40 men working 6 hours a day would earn how much?

phrontister · 2011-11-28 00:57:27

Hi ganesh,

Last edited by phrontister (2011-11-29 00:15:03)

bobbym · 2011-11-28 02:17:55

Hi ganesh;

Jai Ganesh · 2011-11-29 01:23:53

Hi,

phrontister : The solutions #3420, #3421, #3422, and #3423 are all correct. Marvelous!

bobbym : The solutions #3422 and #3423 are correct. Splendid!

#3424. The railway fare is increased by

% when a passenger ought to pay $16 more for a journey. What is the original fare?

#3425. There is a loss of 11% when an article is sold for $178. At what price is he sold at to gain 10%?

phrontister · 2011-11-29 01:45:21

Hi ganesh,

bobbym · 2011-11-29 01:47:09

Hi ganesh;

Jai Ganesh · 2011-11-30 00:24:03

Hi phrontister and bobbym,

The solutions #3424 and #3425 are perfect. Marvelous!

#3426. A man paid 8% of his income in insurance and 12% in rent. His rent payment was $960. What was his payment for the insurance?

#3427. A tap can fill a cistern in 20 minutes and another can empty it in 15 minutes. When the cistern is ½ full, both the taps are opened together. When would the tank be empty?

phrontister · 2011-11-30 01:31:41

Hi ganesh,

Last edited by phrontister (2011-11-30 03:34:28)

bobbym · 2011-11-30 02:13:17

Hi ganesh;

Jai Ganesh · 2011-12-01 00:17:18

Hi phrontister and bobbym,

The solutions #3426 and #3427 are correct. Exemplary!

#3428. What is the value of

?

#3429. What is the value of

?

phrontister · 2011-12-01 00:30:14

Hi ganesh,

bobbym · 2011-12-01 08:04:45

Hi ganesh;

Jai Ganesh · 2011-12-01 20:55:30

Hi phrontister and bobbym,

The solutions #3428 and #3429 are correct. Brilliant!

#3430. The first term of an Arithmetic Progression is 4, the common difference is 2. Find the difference between S[sub]142[/sub] - S[sub]136[/sub] where S represents the sum.

#3431. If p and q are the roots of the equation 3x[sup]2[/sup] + 7x + 12 = 0, then what is the value of

?

bobbym · 2011-12-01 21:27:24

Hi;

phrontister · 2011-12-01 23:18:53

Hi ganesh,

Jai Ganesh · 2011-12-02 01:52:00

Hi bobbym and phrontister,

The solutions #3430 and #3431 are both correct. Brilliant, bobbym!

The solution #3430 is correct, phrontister! Excellent!

#3432. Find the value/values of K in the sequence 3K + 4, K - 2, and 5K + 1 would be a Geometric Progression?

John E. Franklin · 2011-12-02 02:42:55

phrontister · 2011-12-02 03:28:51

Hi ganesh,

Thanks for your explanation of #3431.

Last edited by phrontister (2011-12-02 19:51:29)

bobbym · 2011-12-02 06:48:13

Hi ganesh;

Jai Ganesh · 2011-12-02 23:28:28

Hi John E Franklin, phrontister, and bobbym,

The solutions -27/14, and 0 are correct. (Solution #3432). Outstanding!

#3433. If

and , then what is x : y : z equal to?

#3434. A solid metallic cone of height 10 cm. radius of base 20 cm is melted to make spherical balls each of 4 cm diameter. How many such balls can be made?

Math Is Fun Forum

#3401 2011-11-26 00:53:17

Re: 10 second questions

#3402 2011-11-26 01:16:38

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#3403 2011-11-26 01:27:15

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#3404 2011-11-26 23:28:59

Re: 10 second questions

#3405 2011-11-26 23:39:17

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#3406 2011-11-28 00:24:50

Re: 10 second questions

#3407 2011-11-28 00:57:27

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#3408 2011-11-28 02:17:55

Re: 10 second questions

#3409 2011-11-29 01:23:53

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#3410 2011-11-29 01:45:21

Re: 10 second questions

#3411 2011-11-29 01:47:09

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#3412 2011-11-30 00:24:03

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#3413 2011-11-30 01:31:41

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#3414 2011-11-30 02:13:17

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#3415 2011-12-01 00:17:18

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#3416 2011-12-01 00:30:14

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#3417 2011-12-01 08:04:45

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#3418 2011-12-01 20:55:30

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#3420 2011-12-01 23:18:53

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#3421 2011-12-02 01:52:00

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#3423 2011-12-02 03:28:51

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