the number of boys and girls in a class are in the ratio 7:5 the number of boys is 8 more than the number of boys and girls. what is the total class strength?
Answers
Answered by
306
Let the no. of girls be 5x
No. of boys=7x
According to the question
5x+8=7x
7x-5x=8
2x=8
x=8/2
x=4
No. of girls=5*4=20
no. of boys=7*4 or 5*4+8=28
Hence the total strength of the class is 20+28=48
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Answered by
97
Answer:
Let the no. of girls be 5x
No. of boys=7x
According to the question
5x + 8 = 7x
7x - 5x = 8
2x = 8
x = 8/2
x = 4
No. of girls=5*4=20
No. of boys=7*4 or 5*4+8=28
Hence the total strength of the class is 20+28=48.
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