Challenger App

No.1 PSC Learning App

1M+ Downloads
In a class of 60, where girls are twice that of boys, Gopu ranked seventeenth from the top. If there are 9 girls ahead of Gopu, how many boys are after him in rank?

A12

B23

C3

D7

Answer:

A. 12

Read Explanation:

Total number of students = 60 GIRLS : BOYS = 2 : 1 = 2X : 1X 3X = 60 X = 60/3 = 20 No. of girls = 40 No. of boys = 20 Gopu is 17th from top there are 9 girls ahead of gopu Total girls behind gopu = 40 - 9 = 31 Total students behind gopu = 60 - 17 - 43 Number of boys after Gopu = 43 - 31 = 12


Related Questions:

G, K, M, P, S and V live on six different floors of the same building. The lowermost floor in the building is numbered 1, the floor above it, number 2 and so on till the topmost floor is numbered 6. G lives on floor number 3. Only one person lives between G and M. As many people live below K as above M. P lives immediately below S. How many people live above P?
Eight students, 1 to 8, are sitting around a circular table facing the centre. I is the immediate neighbour of both 8 and 2. 3 is sitting second to the right of 1. 1 is sitting second to the right of 7. 5 is the immediate neighbour of 6 and 4. How many students were sitting between 5 and 1?
How many '7's are there in the following series which are not immediately followed by '3' but immediately preceded by 8?8 9 8 7 6 2 2 6 3 2 6 9 7 3 2 8 7 2 7 7 8 7 3 7
Seven people - B, D, F, K, M, Q and W are sitting in a straight line facing North. D sits second from one of the extreme ends of the line. Only two people sit between D and F. M sits fourth to the right of F. Q sits second to the right of W. K is not an immediate neighbour of W. How many people sit to the left of B?
Ram's rank is 14th from top and 28th from bottom among the children who passed in annual examination. If 16 children failed then find the total number of children who gave the examination