What is the amount of water that needs to be added to a 25 liter mixture of water and acid, which contains 30% acid, in order to dilute it to a solution that is 10% acid?

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200

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Explanation

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Official Explanation

Official

To determine how much water to add, we first note that the volume of acid will stay the same since we are only adding water. The amount of acid in the original solution is given by

\frac{30}{100}*25

liters. We want this to equal…

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Comments

VritiAug 10, 2024

how much time should this take to solve?

SushilFeb 23, 2024

Thanks for sharingThank you for sharing!!thanks for sharing

What this question tests

What it tests

Your ability to reason about weighted averages and the composition of mixtures.

Common trap

Averaging the percentages of two solutions without weighting by their volumes.