QUESTION

CSAT

Medium

Maths

Prelims 2016

In a class of 60 students, where the number of girls is twice that of boys, Kamal, a boy, ranked seventeenth from the top. If there are 9 girls ahead of Kamal, the number of boys in rank after him is

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Explanation

Given: Total number of students = 60 The number of girls is twice that of boys. Kamal is a boy, and his rank is 17th from the top. 9 girls are ahead of Kamal.

Number of boys: $60/3$ Result: 20 boys

Number of girls: $2*20$ Result: 40 girls

Number of students ahead of Kamal: $17-1$ Result: 16 students ahead of Kamal

Number of girls ahead of Kamal: 9

Number of boys ahead of Kamal: 7 boys ahead of Kamal

Number of boys after Kamal: 12 boys after Kamal

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