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

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Solution

The correct option is C 12
Clearly there are 20 boys and 40 girls. Number of students behind Kamal in rank =60-17=43
Number of girls ahead of Kamal in rank =9
$∴$ Number of girls behind Kamal in rank =40-9=31
$∴$ Number of boys behind Kamal in rank = 43 - 31 = 12.

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Q. In a class of 60 where number of girls are twice that of boys kamal ranked seventeenth from the top If there are 9 girls before of kamal how many boys are after him in rank?

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In a class of 60, where number of girls are twice the number of boys, Kamal is ranked 17 $^{t h}$ from the top. If there are 9 girls ahead of Kamal, how many boys are ranked after him?

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

The correct option is C 12Clearly there are 20 boys and 40 girls. Number of students behind Kamal in rank =60-17=43 Number of girls ahead of Kamal in rank =9 ∴ Number of girls behind Kamal in rank =40-9=31 ∴ Number of boys behind Kamal in rank = 43 - 31 = 12.

The correct option is C 12
Clearly there are 20 boys and 40 girls. Number of students behind Kamal in rank =60-17=43
Number of girls ahead of Kamal in rank =9
$∴$ Number of girls behind Kamal in rank =40-9=31
$∴$ Number of boys behind Kamal in rank = 43 - 31 = 12.