MAT 2007 Question Paper

Question 75

A mixture (40 litres) contains tonic and water in the ratio 3 : 1 to make the ratio 2 : 1, how much additional amount of water is required?

Solution

Mixture of tonic and water:

Tonic = 30 l

Water = 10l

Now, 

quantity of water = 10 + x (let x be added)

10 + x = 1/3 * (40 + x)

Solving for x, we get

x = 5 litres.


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