In a school the ratio of number of boys to number of girls is 9:7 .Find the number of boys and girls , if the total number of students is 3200 ?

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Solution

Let No of Boys = 9x
No of Girls = 7x

Sum = 9x + 7x = 16x = 3200 (GIven)

Therefore x = 3200/16 = 200
Therefore no of boys = 9x = 9 x 200 = 1800
no of girls = 7x = 7 x 200 = 1400

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