Question

A vessel contains 56 litres of mixture of milk and water in the ratio 5:2. how much water should be mixed with it so tat the ratio of mil to water is 4:5

Answer 1

Initially, the mixture is 7 parts. The final mixture can be understood of 9 parts, although
the parts will become different size. 

The concentration of milk at the start is 5/7, and concentration of milk wanted is 4/9.

Simple two-part mixture problem. 

Let x be how many parts milk to add to the start mixture.

56 * (5/7) + x/ (x + 56) = 4/9

(40 + x) / (x + 56) = 4/9

9 * (40 + x) = 4 * (x + 56)

360 + 9x = 4x + 224

9x - 4x = 224 - 360

5x = 136

x = 136/5

x = 27.2 litres

the answer is 27.2 litres.

Hope This helps :)

Answer 2

Step-by-step explanation:

correct answer