Exams › SSC CGL (Prelims) › General

A container has milk and water in the ratio $5:3$. If 10 litres of water are added, the ratio becomes $5:4$. Find the initial total volume of the mixture.

1. 70 litres
2. 80 litres
3. 90 litres
4. 100 litres

Correct answer: 80 litres

Solution

Let milk = 5x and water = 3x. After adding 10 litres of water, water becomes 3x + 10 and the ratio becomes 5:4, so 5x/(3x+10)=5/4. Solving gives x=10, hence the initial total volume is 8x=80 litres.

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