The boys and girls in a school are in the ratio 8:3 . If the number of girls is 405, how many boys are there in the school ?

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Solution

Given ratio = 8:3
so 3x = 405
x = 405/3
= 135
so boys = 8×135
= 1080

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The boys and girls in a school are in the ratio 8:3 . If the number of girls is 405, how many boys are there in the school ?

Given ratio = 8:3 so 3x = 405 x = 405/3 = 135 so boys = 8×135 = 1080

Given ratio = 8:3
so 3x = 405
x = 405/3
= 135
so boys = 8×135
= 1080