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#4101 2012-08-21 00:55:09

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,837

Re: 10 second questions

Hi bobbym and Denominator,

bobbym : The solution #4260 is correct. Well done!

Denominator : Both the solutions are correct. Excellent!

#4261. The speeds of three cars are in the ratio 5 : 4 : 6. The ratio in the time taken by them to travel the same distance is _________ .

#4262. In a college, the ratio of the number of boys to girls is 8 : 5. If there are 160 girls, what is the total number of students in the college?


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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#4102 2012-08-21 01:01:13

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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#4103 2012-08-21 01:05:51

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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#4104 2012-08-21 07:24:46

Denominator
Member
Registered: 2009-11-23
Posts: 219

Re: 10 second questions

Hello


Last edited by Denominator (2012-08-21 07:25:41)


koko28.png

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#4105 2012-08-21 23:39:12

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,837

Re: 10 second questions

Hi anonimnystefy, bobbym, and Denominator,

The solution #4261 and #4262 are correct. Excellent!

#4263. The ratio of the number of boys and girls in a school is 3 : 2. If 20% of the boys and 25% of the girls are scholarship holders, what percentage of the students does not get the scholarship?

#4264. In a school, 10% of the boys are same in number as 1/4 th of the girls. What is the ratio of boys to girls in that school?


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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#4106 2012-08-21 23:45:34

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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#4107 2012-08-22 07:17:30

Denominator
Member
Registered: 2009-11-23
Posts: 219

Re: 10 second questions

Hello



koko28.png

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#4108 2012-08-22 22:42:52

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,837

Re: 10 second questions

Hi bobbym and Denominator,

Correct, bobbym! Good work!

The solution #4264 is correct, bobbym and Denominator! Neat work!

#4265. The ratio of the incomes of A and B is 5 : 4 and the ratio of their expenditures is 3 : 2. If at the end of the year, each saves $1600, then the income of A is ____________

#4266. Zinc and copper are melted together in the ratio 9 : 11. What is the weight of melted mixture, if 28.8 kilograms of zinc has been consumed in it?


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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#4109 2012-08-22 22:49:49

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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#4110 2012-08-23 23:54:25

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,837

Re: 10 second questions

Hi bobbym,

The solutions #4265 and #4266 are correct. Brilliant!

#4267. An alloy is to contain copper and zinc in the ratio 9 : 4. The zinc required to be melted with 24 kilograms of copper is _____________

#4268. 60 kg of an alloy A is mixed with 100 kg of alloy B. If alloy A has lead and tin in the ratio 3 : 2 and alloy B has tin and copper in the ratio 1 : 4, then the amount of tin in the new alloy is ________________


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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#4111 2012-08-24 00:29:17

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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#4112 2012-08-24 23:36:01

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,837

Re: 10 second questions

Hi bobbym,

The solutions #4267 and #4268 are perfect. Excellent!

#4269. Find the fourth proportional to 4, 9, 12.

#4270. Find the third proportional to 16 and 36.


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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#4113 2012-08-24 23:40:31

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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#4114 2012-08-26 00:14:05

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,837

Re: 10 second questions

Hi bobbym,

The solutions #4269 and #4270 are correct. Good work!

#4271. A fruitseller sells mangoes at the rate of $9 per kilogram and thereby loses 20%. At what price per kilogram, he should have sold them to make a profit of 5%?

#4272. A property dealer sells a house for $630,000 and in the bargain makes a profit of 5%. Had he sold it for $500,000, then what percentage of loss or gain he would have made?


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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#4115 2012-08-26 06:23:41

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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#4116 2012-08-26 19:45:38

Denominator
Member
Registered: 2009-11-23
Posts: 219

Re: 10 second questions

Hello


koko28.png

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#4117 2012-08-27 00:55:55

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,837

Re: 10 second questions

Hi bobbym and Denominator,

The solutions #4271 and #4272 are correct. Excellent!

#4273. If Selling Price is doubled, the profit triples. Find the profit percent.

#4274. At what profit percent must an article be sold so that by selling at half that price, there may be a loss of 30%?


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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#4118 2012-08-27 04:43:59

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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#4119 2012-08-27 07:20:42

Denominator
Member
Registered: 2009-11-23
Posts: 219

Re: 10 second questions

Hello


koko28.png

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#4120 2012-08-27 23:47:55

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,837

Re: 10 second questions

Hi bobbym and Denominator,

The solutions #4273 and #4274 are correct, bobbym! Neat work!

The solution #4273 is correct, Denominator! Well done!

#4275. The profit earned by selling an article for $832 is equal to the loss incurred when the same article is sold for $448. What should be the selling price for making 50% profit?

#4276. The profit earned by selling an article for $900 is double the loss incurred when the same article is sold for $450. At what price should the article be sold to make 25% profit?


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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#4121 2012-08-28 00:19:53

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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#4122 2012-08-28 17:47:00

Denominator
Member
Registered: 2009-11-23
Posts: 219

Re: 10 second questions

Hello


koko28.png

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#4123 2012-08-29 00:26:31

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,837

Re: 10 second questions

Hi bobbym and Denominator,

The solutions #4275 and #4276 are correct. Brilliant!

#4277. If 35% of a number is 175, then what percent of 175 is that number?

#4278. Two-fifth of one-third of three-seventh of a number is 15. What is 40 percent of that number?


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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#4124 2012-08-29 01:37:14

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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#4125 2012-08-29 23:43:21

Jai Ganesh
Administrator
Registered: 2005-06-28
Posts: 45,837

Re: 10 second questions

Hi bobbym,

The solutions #4277 and #4278 are correct. Remarkable!

#4279. If 15% of 40 is greater than 25% of a number by 2, when what is the number?

#4280. Subtracting 40% of a number from the number, we get the result as 30. Find the number.


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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