Answers

2014-04-24T12:36:11+05:30
Let Boys be x, and girls be y.
So total , x+y=400

60x/100 boys cleared and 80y/100 girls.

now  {( 0.6x +0.8y)/400 }*100= 65

0.15x +0.2y =85

So 
x=300
and y=100(girls)
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