In a class, there are 150 students and the number of boys is twice as much as the number of girls. One of the boys, Kunal, ranked 25th from the top and only 10 girls are ahead of Kunal. How many boys are there after him ? 

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  1. 90
  2. 75
  3. 85
  4. Cannot be determined.

Answer (Detailed Solution Below)

Option 3 : 85
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Detailed Solution

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Given statement;

Total strength of class = 150

Girls :Boys  = 1 : 2

This means 100 boys and 50 girls are there in the class.

The rank of Kunal from the top is 25th. 

which means 24 students are ahead of Kunal and 10 are girls. So 14 are boys.

Total boys = 100

ahead of Kunal = 14

Behind Kunal = 100 - 14 - 1(Kunal) = 85 boys. (Kunal is a boy so he will also be counted)

Hence, there are "85" boys behind Kunal.

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