Civil Services WBCS (Executive) Prelims + Mains Mock Tests 2025 Quantitative Aptitude Mixture Problems
The ratio of glycerin and water in a mixture is 3 ∶ 1. How much fraction of the mixture must be drawn off and substituted by water so that the ratio of glycerin and water becomes 1 ∶ 1?
1
1/3
2
1/2
3
2/3
4
3/4