or
or
Let, No. of boys = x
As per question,
x + 2x = 60
∴ x = 20
∴ No. of boys = 20 and No. of girls = 40
As Kamal ranked 17th from the top, so there are 16 students ahead of him (including 9 girls).
that means, there are 7 boys and 9 girls ahead of Kamal.
Now, till 17th there are (7 boys + Kamal) = 8 boys
So, remaining boys that ranked after Kamal = (20-8) = 12 boys (Ans:)
