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Calculate the weight and the percentage of zinc in the zinc-copper alloy being given that the latter's alloy with $3$ kg of pure zinc contains $90$ percent of zinc and with $2$ kg of $90 %$ zinc alloy contains $84 %$ of zinc.

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Important Questions on Ratio, Proportion and Variation

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CAT

IMPORTANT

How to prepare for Quantitative Aptitude for the CAT>Chapter 11 - Ratio, Proportion and Variation>Level of Difficulty>Q 5

Two solutions, the first of which contains

0.8 kg

and the second

0.6 kg

of salt, were poured together and

10 kg

of a new salt solution were obtained. Find the weight of the first and of the second solution in the mixture if the first solution is known to contain

10

percent more of salt than the second.

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CAT

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How to prepare for Quantitative Aptitude for the CAT>Chapter 11 - Ratio, Proportion and Variation>Level of Difficulty>Q 6

From a full barrel containing

729

litres

of honey we pour off

a litre

and add water to fill up the barrel. After stirring the solution thoroughly, we pour off

a litre

of the solution and again add water to fill up the barrel. After the procedure is repeated

6

times, the solution in the barrel contains

64 litres

of honey. Find

a

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IMPORTANT

How to prepare for Quantitative Aptitude for the CAT>Chapter 11 - Ratio, Proportion and Variation>Level of Difficulty>Q 7

In two alloys, the ratios of Nickel to Tin are

5 : 2

and

3 : 4

(by weight). How many kilograms of the first alloy and of the second alloy should be alloyed together to obtain

28 kg

of a new alloy with equal contents of nickel and tin?

EASY

CAT

IMPORTANT

How to prepare for Quantitative Aptitude for the CAT>Chapter 11 - Ratio, Proportion and Variation>Level of Difficulty>Q 8

In two alloys, aluminium and iron are in the ratios of

4 : 1

and

1 : 3

. After alloying together

10 kg

of the first alloy,

16 kg

of the second and several kilograms of pure aluminium, an alloy was obtained in which the ratio of aluminium to iron was

3 : 2

. Find the weight of the new alloy?

EASY

CAT

IMPORTANT

How to prepare for Quantitative Aptitude for the CAT>Chapter 11 - Ratio, Proportion and Variation>Level of Difficulty>Q 9

There are two alloys of gold, silver and platinum. The first alloy is known to contain

40

percent of platinum and the second alloy

26

percent of silver. The percentage of gold is the same in both alloys. Having alloyed

150 kg

of the first alloy and

250 kg

of the second, we get a new alloy that contains

30

percent of gold. How many kilograms of platinum is there in the new alloy?

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CAT

IMPORTANT

How to prepare for Quantitative Aptitude for the CAT>Chapter 11 - Ratio, Proportion and Variation>Level of Difficulty>Q 10

Two alloys of iron have different percentage of iron in them. The first one weighs

6 kg

and second one weighs

12 kg

. One piece each of equal weight was cut off from both the alloys and the first piece was alloyed with the second alloy and the second piece alloyed with the first one. As a result, the percentage of iron became the same in the resulting two new alloys. What was the weight of each cut-off piece?

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CAT

IMPORTANT

How to prepare for Quantitative Aptitude for the CAT>Chapter 11 - Ratio, Proportion and Variation>Level of Difficulty>Q 11

Two litres of a mixture of wine and water contain

12 %

water. They are added to

3 litres

of another mixture containing

7 %

water, and half a

litre

of water is then added to whole. What is the percentage of water in resulting concoction?

EASY

CAT

IMPORTANT

How to prepare for Quantitative Aptitude for the CAT>Chapter 11 - Ratio, Proportion and Variation>Level of Difficulty>Q 12

Three vessels having volumes in the ratio of 1:2:3 are full of a mixture of coke and soda. In the first vessel, ratio of coke and soda is 2:3, in second, 3:7and in third, 1:4. If the liquid in all the three vessels were mixed in a bigger container, what is the resulting ratio of coke and soda?

Calculate the weight and the percentage of zinc in the zinc-copper alloy being given that the latter's alloy with 3 kg of pure zinc contains 90 percent of zinc and with 2 kg of 90% zinc alloy contains 84% of zinc.

Important Questions on Ratio, Proportion and Variation

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Calculate the weight and the percentage of zinc in the zinc-copper alloy being given that the latter's alloy with $3$ kg of pure zinc contains $90$ percent of zinc and with $2$ kg of $90 %$ zinc alloy contains $84 %$ of zinc.