If solution A contains 30 percent mercury and solution B has 15 percent mercury, what will be the percentage of mercury in the mixture when 10 ounces of solution A are combined with 20 ounces of solution B?

Correct answer marked below

10 %

15 %

20 %

Correct

25 %

30 %

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Explanation

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Official Explanation

Official

The amount of mercury in 10 ounces of solution A is calculated as

(10 * 0.3) = 3

ounces. For solution B, the mercury content in 20 ounces is

(20 * 0.15) = 3

ounces. Therefore, the total mercury in the mixture is [m]3 + 3 =…

Comments

ZaberNov 29, 2024

thanksss

SamidhaApr 5, 2024

greatt question!

What this question tests

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

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