10 second questions

ganesh · 2012-08-19 00:44:36

Hi bobbym and Denominator,

The solutions

and

bobbym · 2012-08-19 00:46:55

Hi ganesh;

I got those in post #4100

Sorry, but what does proportional mean?
I don't really get this!

Hi Denominator;

Did you google for them? Are you just stuck on mean and third and fourth proportional or more basic than that?

ganesh · 2012-08-19 01:04:25

Hi bobbym and Denominator,

The solutions #4255 and #4256 are correct, bobbym! Excellent!

#4257. If $782 is divided into three parts, proportional to 1/2 : 2/3 : 3/4, then the first part is __________________

#4258. If 76 is divided into four parts proportional to 7, 5, 3, 4, then the smallest part is _________________

bobbym · 2012-08-19 01:10:21

Hi ganesh;

dlamacharles · 2012-08-19 03:05:54

7, 14, 21, 28,....
a=7
d=7
n=?
Tn=98
Tn=a+(n-1)d
n=14

dlamacharles · 2012-08-19 03:22:32

Proportion is a factor of equality.

Denominator · 2012-08-19 19:21:58

Yeah, I understand what proportion is, but I just didn't understand it in the context of 4255 and 4256

bobbym · 2012-08-19 20:38:28

Hi;

I use this page and then just plug in:

http://www.vitutor.com/arithmetic/ratio … ional.html

ganesh · 2012-08-20 00:51:01

Hi bobbym and Denominator,

The solutions #4257 and #4258 are correct. Excellent!

#4259. 85 kilograms of a mixture contains milk and water in the ratio 27 : 7. How much more water is to be added to get a new mixture containing milk and water in the ratio 3 : 1?

#4260. The ages of A and B are in the ratio 3 : 1. Fifteen years hence, the ratio would be 2 : 1. Find their present ages.

bobbym · 2012-08-20 07:57:31

Hi ganesh;

Denominator · 2012-08-20 16:55:13

Hello

ganesh · 2012-08-21 00:55:09

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?

anonimnystefy · 2012-08-21 01:01:13

Hi ganesh

bobbym · 2012-08-21 01:05:51

Hi ganesh;

Denominator · 2012-08-21 07:24:46

Hello

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

ganesh · 2012-08-21 23:39:12

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?

bobbym · 2012-08-21 23:45:34

Hi;

Denominator · 2012-08-22 07:17:30

Hello

ganesh · 2012-08-22 22:42:52

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?

bobbym · 2012-08-22 22:49:49

Hi ganesh;

ganesh · 2012-08-23 23:54:25

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 ________________

bobbym · 2012-08-24 00:29:17

Hi;

ganesh · 2012-08-24 23:36:01

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.

bobbym · 2012-08-24 23:40:31

Hi;

ganesh · 2012-08-26 00:14:05

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?

#4101 2012-08-19 00:44:36

Re: 10 second questions

#4102 2012-08-19 00:46:55

Re: 10 second questions

#4103 2012-08-19 01:04:25

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#4104 2012-08-19 01:10:21

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#4105 2012-08-19 03:05:54

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#4106 2012-08-19 03:22:32

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#4107 2012-08-19 19:21:58

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#4108 2012-08-19 20:38:28

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#4109 2012-08-20 00:51:01

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#4110 2012-08-20 07:57:31

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#4111 2012-08-20 16:55:13

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#4112 2012-08-21 00:55:09

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#4113 2012-08-21 01:01:13

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#4114 2012-08-21 01:05:51

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#4115 2012-08-21 07:24:46

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#4116 2012-08-21 23:39:12

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#4117 2012-08-21 23:45:34

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#4118 2012-08-22 07:17:30

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#4119 2012-08-22 22:42:52

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#4120 2012-08-22 22:49:49

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#4121 2012-08-23 23:54:25

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#4122 2012-08-24 00:29:17

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#4123 2012-08-24 23:36:01

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#4124 2012-08-24 23:40:31

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#4125 2012-08-26 00:14:05

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