15. 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 girls. what is the total class strength?
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Let, no. of girls=x
no. of boys=x+8
But
ratio of boys and girls in a class is 7:5.
So,
7/5=x+8/x
→7x=5x+40
→2x=40
→x=20
Therefore, total class strength is x+x+8 (where x=20)=20+20+8
=48
Hope this helps you. Thank you.
no. of boys=x+8
But
ratio of boys and girls in a class is 7:5.
So,
7/5=x+8/x
→7x=5x+40
→2x=40
→x=20
Therefore, total class strength is x+x+8 (where x=20)=20+20+8
=48
Hope this helps you. Thank you.
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