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Question

the number of boys and girls in a class are in ratio 7:5. The number of boys is 8 more than the number of girls . What is the the total strength in class ??


Solution

let the no. of girls be x

let the no. of boys be x+8

A.T.Q

x+8/x=7/5

5(x+8)=7x

5x+40=7x

5x-7x=-40

-2x=-40

x=-40/-2

x=20

hence, girls=20

boys=20+8=28


Mathematics

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