the ratio of boys and girls in a class is 5:2 if the total number of students is 35 then the number of boys is
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ratio = 5:3
boys = 5x
girls = 2x
total students = 5x + 2x = 7x
7x = 35
x = 35/7 = 5
boys = 5x = 5×5 = 25
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