Question

The ratio of the number of boys to the number of girls in a school of 900pupil is 4:5calculate the number of gi
girls and boys in the school. ​

Answer 1

Answer:

Let the constant of proportionality be x

Then,

Number of boys=4x

Number of girls=5x

Total number of pupils=4x+ 5x=9x

According to the question,

9x=900

x=100

So,

Number of boys=4x=4×100=400

Number of boys=4x=4×100=400Number of girls=5x =5×100=500

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