How much water is to be added to 75 ml of alcohol so that the mixture contains 25 of alcoh...........

Quantitative Aptitude( Paper-I ) Percentage

How much water is to be added to 75 ml of alcohol so that the mixture contains 25% of alcohol?

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CAPF 2021 Paper-1

100 ml

225 ml

250 ml

125 ml

- You have 75 ml of alcohol.

- You want the mixture to be 25% alcohol.

- To find out how much water to add, use the formula: Alcohol volume / Total volume = Alcohol percentage

- Here, Total volume = Alcohol volume + Water volume

- The desired equation is: 75 ml / (75 ml + Water volume) = 0.25

- Solving for Water volume:

- 75 = 0.25 * (75 + Water volume)

- 75 = 18.75 + 0.25 * Water volume

- 56.25 = 0.25 * Water volume

- Water volume = 225 ml

Option:2 - 225 ml is the correct answer.

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