Question

There are 2 solutions of acid and water in the ratio 3:5 and 1:3 respectively. Equal quantities of 2 solutions are mixed together and out of this solution, 704 ml is taken out and 88 ml of water is added, find the ratio of acid to water in the resulting solution.

options : a) 4:11 b) 6:11 c) 5:13 d) 7:13

Answer 1

Answer:

Two solutions having milk and water in the ratios 3:5 and 4:7 are mixed in the ratio 2:3. What is the ratio of milk and water in the resultant mixture?

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David Hawley

Answered April 18, 2019

Simply work it out in mls to visualize it:

First Solution

3 mls milk

5 mls water

multiply by 2

6 mls milk

10 mls water

Second solution

4 mls milk

7 mls water

multiply by 3

12mls milk

21 mls water

Mix

6+12 mls milk = 18 mls

10+21 mls water = 31 mls

Therefore the ratio of the the final mixture is 18/31