Delhi Police Constable 2008 Paper

Question : 74 of 100

Marks: +1, -0

In a solution of 100 litre, the ratio of milk and water is 7 : 3. How much milk is required to be added to the solution to make the ratio 3 : 1?

Solution:

Amount of milk in solution

=7/10×100=70ltr

Amount of water in solution

=100-70=30

ltr
i.e., desired amount of milk = 20 ltr.

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