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In a class of 60 students where girls are twice that of boys, Laxmi ranked 27th from the top. If there are 9 boys ahead of Laxmi, how many girls are after her rank ?

A.21
B.22
C.23
D.24
Answer and Feedback
Answer:B
Feedback:Given number of girls are twice that of boys.
G=2B and G+B = 60
Therefore, G=40 and B= 20
Given Laxmi ranked 27th from the top and 9 boys are ahead of Laxmi.
Therefore, There are 17 girls ahead of Laxmi.
Therefore, Number of girls who ranked after Laxmi = 40 - (17+1) = 22.

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