The boys and girls in a school are in the ratio 9:5. If the total strength of the school is 448, find the number of girls.
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ratio of boys and girls =9:5
let the number of boys =9x
let the number of girls =5x
total strength =448
9x+ 5x =448
14x =448
x=32
number of girls = 5x = 5× 32 =160
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