SSC CGL – Combined Graduate Level Examination · প্রশ্ন 63

A 100-litre solution contains acid and water in the ratio 3:2. Some quantity of this solution is removed and replaced with pure acid. If the final ratio of acid to water becomes 7:3, how many litres of solution were replaced?

1. A35 litres
2. B25 litres
3. C50 litres
4. D20 litres