# the number of boys and girls in a class are in ratio of 7:5. the number of boys is 8 more than girls what is the total strength of the class?

2
by mongoose
total no of students 48
20

2014-05-10T15:04:16+05:30

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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
total no of students 48
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2014-05-10T15:05:07+05:30

### This Is a Certified Answer

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B:g=7:5
b=8+g
=>(8+g):g=7:5
=>g=20

Hence,b=8+g
=>b=8+20=28

therefore,there are 28 boys and 20 girls in the class.
=>total strength in the class=28+20
=48