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Ratio & Proportion · Question 2 of 67

Question 2

EasyOriginal question

A school has 84 girls and 126 boys in Class 11. What is the ratio of girls to boys in its simplest form?

Options for question 2

Show the answer and explanation
CorrectNot quiteAnswer D

Correct answer: D

Explanation

  1. Girls : boys = 84:12684 : 126.

  2. The HCF of 84 and 126 is 42, so divide both terms by 42: 84:126=2:384 : 126 = 2 : 3.

Worth noting

The order matters: girls come first, so 3:23 : 2 is the ratio of boys to girls.

Concept
Simplifying a ratio by dividing by the HCF
Typical time
30 s
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