the number of boy and girl in a class are in the ratio 7:5.The number of boys is 8 more than the number of girls.What is the total class strenght
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Answer:
Total = 48 students
Step-by-step explanation:
Ratio = Boys : Girls = 7:5
no. of boys = 7y
no. of girls = 7y - 8 = 5y
hence, 7y - 8 = 5y
=> 7y - 5y = 8
=> 2y = 8
=> y = 8/2 = 4
girls = 4 x 5 = 20
boys = 4 x 7 = 28
total = 20 + 28 = 48 students
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