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In a certain school, the ratio of boys to girls is 5 ∶ 7. If there are 2400 students in the school, then how many girls are there?

A1000

B1200

C1600

D1400

Answer:

D. 1400

Read Explanation:

Given∶ 

Total number of students = 2400

Let Girls be 7x and Boys 5x.

Total Students be 5x+7x=12x

Calculation

Total Students = 12x = 2400

X= 200

Number of girls = 7x=7×200=1400=7\times200=1400

The answer is 1400


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