In a school, 10% of boys are equal to the one - fourth of the girls. What is the ration of boys and girls in that school?

3 : 2
5 : 2
2 : 1
4 : 3

Correct Answer: 5 : 2

Explanation:

Let the number of boys = B
and number of girls = G
Then, 10% of B = 1/4 of G
⇒ B/10 = G/4
⇒ B/G = 10/4 = 5/2
⇒ B : G = 5 : 2

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