The number of boys and girls in the class are in the ratio 7:5. The number of boys is 8 more than the number of girls. What is the total class strength?
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Let's the number of girls 'x'
The number of Boys x'+8
•Boys : Girl's = 7:5
x+8 : x = 7:5
Given equation
7x=5(x+8)
7x = 5x+40
7x-5x=40
2x= 40
x=40÷2=20
x=20
Hence ,
Number of girls x = 20
Number of Boys = x +8 = 20+8 = 28
Total = 20 + 28 =48
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