Question

The ratio of milk and water in a vessel is 5:3. How much part of a mixture is replaced by 100/7% part of water so that the ratio of new mixture becomes 3:5 ?.

Answer 1

Final/initial = (1-replace/total)^n

1/2/(5/8) = 1-k

4/5 = 1-k

K = 1/5

2nd method

Mixture drawn out and added water, it means syrup part only is added to water so

Let x be d mixture drawn out

3/8 + 5/8x = 1/2

5/8x = 1/8

x = 1/5

Answer 2

sry I don't know bro