Question

The ratio of milk and water in a mixture is 7:5. We
withdraw 9 lt mixture and added same quantity of
water to the mixture, then ratio becomes 1 : 1. Find
the initial quantity of milk.
​

Answer 1

Answer:

36.75 L

Step-by-step explanation:

Let initial amount of milk,m=x L

water, w=5x/7 L

If 9 L is taken out, now

m’=x-9*7/12

w’=5x/7–9*5/12

Adding 9 L w into the mixture

w”=5x/7–9*5/12+9

Now the mixture has same amount of w and m

So equating m’=w”

We get initial amount of milk= 36.75 L