If in a class, 10% of the girls are equal to one-fourth of the boys in the school, then the ratio of girls to the boys in the school is?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 5:2
The statement gives an equation between a part of the girls and a part of the boys; rearranging it gives the ratio of girls to boys.
10% of the girls \(=\) one-fourth of the boys: \(\displaystyle \frac{G}{10}=\frac{B}{4}\)
\(\displaystyle \frac{G}{B}=\frac{10}{4}=\frac{5}{2}\), so G : B \(=5:2\)
Tip: The ratio 2:5 in Option (3) is boys to girls; the question asks for girls to boys.