2021 · Q97
How much water is to be added to 75 ml of alcohol so that the mixture contains 25% of alcohol?
general-mental-abilityquantitative-aptitude
- A100 ml
- B225 ml
- C250 ml
- D125 ml
Explanation
The 75 ml of alcohol must constitute 25% of the final mixture, so the final volume must be 75/0.25 = 300 ml. Water to be added is 300 − 75 = 225 ml. Hence option B is correct.