Math, asked by gojd, 1 year ago

question 15 full process

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Answered by jkg24

0

let 3x , 5x and 7x
3x+5x+7x/3=25
15x=25×3
15x=75
x=75/15
x=5
3x=3×5=15
5x=5×5=25
7x=7×5=35
therefore,the youngest boy is 3x i.e. first boy

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