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If 60% of students in a school are boys and the total number of girls in the school is 460, find the number of boys in the school.
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- 680
- 690
- 700
- 720
Correct Option: B
Let the total number of students be x.
Given,Number of boys
= | x .........(i) | 100 |
Number of girls = 460
⇒ Number of boys = x – 460 ......... (ii)
From equations (i) and (ii),
⇒ x – 460 = | 100 |
⇒460 = | x | 100 |
⇒ x = | = 1150 | 40 |
∴ Number of boys = 1150 – 460 = 690.