2023 · Q22
Container X contains a mixture of oil and water in the ratio 1 : 3, whereas container Y contains a mixture of oil and water in the ratio 2 : 3. If 2 litres of liquid from container X and 5 litres of liquid from container Y are mixed together in container Z that initially contains 1 liter of pure oil, then what is the percentage of oil in container Z?
General Mental Ability, Quantitative Aptitude and StatisticsNumber system and arithmetic
- A41.25
- B42.75
- C43.75
- D44.25
Explanation
From X (oil:water 1:3), 2 litres give 0.5 L oil and 1.5 L water; from Y (2:3), 5 litres give 2 L oil and 3 L water. Adding Z's initial 1 litre of pure oil gives 3.5 L oil and 4.5 L water, 8 L in all. Oil percentage = 3.5/8 x 100 = 43.75%. Hence C.