In a certain city, the population ratio indicates that there are five men for every four women and six children for every four men. If the city has 72,000 women, determine the total number of children in the city.

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180,000

162,000

144,000

135,000

Correct

36,000

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Explanation

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Official Explanation

Official

In this city, the demographic ratio shows that for every four women, there are five men. Given that there are 72,000 women, we can calculate the number of men as

72000*\frac{5}{4}

. Next, since there are six children for every four men, we find the…

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Comments

K61Dec 28, 2024

Any shortcuts for solving this faster?

PhilemonDec 15, 2024

Thank you very much!

What this question tests

What it tests

Your ability to convert between fractions, ratios, and decimals and to reason proportionally.

Common trap

Cross-multiplying incorrectly or mixing up the ratio parts — a part:part ratio is not a fraction of the whole.