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A class has 90 students. If the ratio of boys and girls is 7:8, find the number of boys in the class.

/ Mathematics Mcqs, Ratio and Proportion / By
A class has 90 students. If the ratio of boys and girls is 7:8, find the number of boys in the class.

A. 48
B. 42
C. 60
D. 70
7x+8x=90 15x=90 x=6 Number of boys=7x=42