b) In the classroom of Basic Mathematics, the ratio of boys to girls is 5:1. If there are 10 girls in the class, what is the total strength of boys?
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Boys : Girls = 5x : 2x
According to the question
5x - 2x = 450
3x = 450 = x =150
∴∴ Number of students in that school
= 5x + 2x = 7x
7 x 150 = 1050
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