jamifahad wrote:

From a group of boys and girls, 15 girls leave. There are then left two boys for each girl. After this 45 boys leave. There are then 5 girls for each boy. The number of girls in the beginning was:

1) 29

2) 40

3) 43

4) 48

5) None of these

Solve it using choices.

take choice 1) 29 girls

15 girls leave .So, only 14 girls left. Given 2 boys are left for each girl so number of boys should be 28.However , next step where 45 boys leave would not satisfy.

Lets try choice 2) 40 girls. 15 girls leave so left is 25 girls. Boys will be 50 then.

Next step ; 45 boys leave so only 5 boys left and 5 girls for each boy.Satisfies

This perfectly fits our conditions.Hence option (2)40 is the answer.

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Thanks,

GC24

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