The ratio of boys and girls in a school is 9 : 5. If the total no. of student in the school is 1050, then the number of Boys is?

675

Ratio of boys and girls in a school is, 

     B    :    G

     9    :    5

According to question,

14R = 1050

1R = \(\frac{1050}{14}\)

Number of boys = 9R = 9 × \(\frac{1050}{14}\)

= 675

The correct answer is Option (2) → 675