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In a class of 60, where girls are twice that of boys, Kamal ranked seventeenth from the top. If there are 9 girls ahead of Kamal, how many boys are af
Question

In a class of 60, where girls are twice that of boys, Kamal ranked seventeenth from the top. If there are 9 girls ahead of Kamal, how many boys are after him in rank ?

A.

3

B.

7

C.

12

D.

23

Correct option is C

Given:
In a class of 60, where girls are twice that of boys, Kamal ranked seventeenth from the top. If there are 9 girls ahead of Kamal.
As per given information,
Total students = 60
Girl : Boys
2x : x
3x = 60
x = 20
Total girls = 40
Total boys = 20
Total Students -  Ahead Kamal = 60 -17 = 43
Total boys after Kamal = 43 - 31 = 12
So, 12 boys are after him in rank.
Thus, the correct answer is (c).

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