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#3176 2011-09-22 17:59:25
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym,
The solution #3266 is correct. Perfect!
#3267. If the compound interest on a certain sum at
% for 3 years is $1270, find the simple interest on the same sum at the same rate for the same period.#3268. The difference between the compound interest and simple interest on a certain sum at 10% per annum for 2 years is $631. Find the sum.
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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#3177 2011-09-22 18:25:54
- 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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#3178 2011-09-23 00:55:42
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym,
The solutions
#3269. A sum of money doubles itself at compound interest in 15 years. In how many years would it become eight times?
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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#3179 2011-09-23 05:15:18
- 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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#3180 2011-09-23 19:18:45
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym,
The solution #3269 is correct. Excellent!
#3270. Sound is said to travel in air at about 1100 feet per second. A man hears the axe striking the tree,
seconds after he sees if striking the tree. How far is the man from the wood chopper? (In feet)#3271. An express train traveled at an average speed of 100 kilometers per hour, stopping for 3 minutes after every 75 kilometers. How long did it take to reach its destination 600 kilometers from the starting point?
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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#3181 2011-09-23 22:48:28
- 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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#3182 2011-09-24 00:13:54
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym,
The solutions #3270 and #3271 are perfect. Good work!
#3272. If
, then what is the value of x?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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#3183 2011-09-24 00:15:36
- anonimnystefy
- Real Member
- From: Harlan's World
- Registered: 2011-05-23
- Posts: 16,049
Re: 10 second questions
hi ganesh
Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.
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#3184 2011-09-24 00:19:28
- 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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#3185 2011-09-24 00:40:18
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi anonimnystefy and bobbym,
The solution #3272 is correct. Good work!
#3273. If 2A = 3B and 4B = 5C, then what is the ratio A:C equal to?
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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#3186 2011-09-24 00:43:43
- 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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#3187 2011-09-25 00:11:25
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym,
The solution #3273 is perfect. Well done!
#3274. If 0.75:x::5:8, then what is the value of x?
#3275. If x:y = 5:2, then what is the ratio (8x + 9y) : (8x + 2y) equal to?
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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#3188 2011-09-25 00:13:27
- 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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#3189 2011-09-25 00:51:24
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym,
The solution #3275 is correct. Good work!
#3276. If 15% of x = 20% of y, what is the ratio x:y equal to?
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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#3190 2011-09-25 01:03:41
- 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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#3191 2011-09-26 17:10:11
- Denominator
- Member
- Registered: 2009-11-23
- Posts: 220
Re: 10 second questions
Hey guys,
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#3192 2011-09-26 22:40:23
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym and Denominator,
The solution #3276 (4:3) is correct. Well done!
#3277. If
, what is the ratio x:y equal to?#3278. If
, what is the ratio x:y equal to?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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#3193 2011-09-26 22:45:53
- 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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#3194 2011-09-28 00:23:01
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym,
The solutions #3277 and #3278 are both correct. Excellent!
#3279. In the new budget, the price of kerosene oil rose by 25%. By how much percent must a person reduce his consumption so that his expenditure in it does not increase?
#3280. During one year, the population of a town increased by 5% and during the next year, the population decreased by 5%. If the total population is 9975 at the end of the second year, then what is the population size in the beginning of the first year?
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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#3195 2011-09-28 00:32:13
- 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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#3196 2011-09-28 20:27:27
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym,
The solutions #3279 and #3280 are correct. Perfect!
#3281. A cube of edge 5 cm is cut into cubes each of edge 1 cm. What is the ratio of the total surface area of one of the small cubes to that of the large cube?
#3282. A large cube is formed from the material obtained by melting three smaller cubes of 3 cm, 4 cm, and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?
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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#3197 2011-09-28 23:33:50
- 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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#3198 2011-09-29 00:15:04
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym,
The solutions #3281 and #3282 are correct. Excellent!
#3283. What is the value of
?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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#3199 2011-09-29 00:21:57
- 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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#3200 2011-09-30 00:24:29
- Jai Ganesh
- Administrator
- Registered: 2005-06-28
- Posts: 48,413
Re: 10 second questions
Hi bobbym,
The solution #3283 is correct. Excellent!
#3284. By selling an article for $100, a man gains $15. Then, what is his gain percent?
#3285. When a commodity is sold for $34.80, there is a loss of 2 %. What is the cost price of the commodity?
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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