In a class of 56 students the number of boys is 2 by fifth of a number of girls find the number of boys and girls
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2
no.of girls=x
no.of boys=2x/5
total=2x/5 +x=56
= 7x/5=56
=7x=280
x=280/7
x=40
no.of girls=40
no.of boys =56-40=16
Answered by
2
let the no. of girls be x
no.of boys is 2/5 of x = 2/5x
b.t.p
x+2/5x = 56
5x+2x/5=56
7x+5=56
7x=56×5
7x=280
x=280/7
x=40.
'no. of girls=40
no. of boys=(56-40)
=16(ans)
no.of boys is 2/5 of x = 2/5x
b.t.p
x+2/5x = 56
5x+2x/5=56
7x+5=56
7x=56×5
7x=280
x=280/7
x=40.
'no. of girls=40
no. of boys=(56-40)
=16(ans)
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