Out of 256 students boys and girls, the ratio is 9:7. so total number of girls is
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total students=256
9:7 is the ratio of boys &girls
let the common multiple be x
boys=9x,girls=7x
9x+7x=256
16x=256
x=256/16
x=16
Total number of girls=7x=7(16)
=112
total no. of girls are112
9:7 is the ratio of boys &girls
let the common multiple be x
boys=9x,girls=7x
9x+7x=256
16x=256
x=256/16
x=16
Total number of girls=7x=7(16)
=112
total no. of girls are112
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