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  1. In a mixture of 45 liters, the ratio of milk and water is 4:1. How much water must be added to make the mixture ratio 3:2 ?
    1. 72 litres
    2. 24lLitres
    3. 15 litres
    4. 1.5 litres
Correct Option: C

Let us assume the ratio factor is x.
According to question,
Quantity of milk = 4x liters and Quantity of Water = x liters.
According to question,
4x + x = 45
5x = 45
x = 9
Quantity of milk = 4x = 9 x 4 = 36 liters
Quantity of water = x = 9 liters
Let y liters of water be added to make the ratio 3:2
Then,
36/(9 + y) = 3/2
72 = 27 + 3y
y = 15 liters
If you add 15 liters of water, the ratio will become 3:2.



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