In a class of 60 students, where the number of girls is twice that of the boys, a boy, ranked 20th from the top. If there are 7 girls ahead of the boy, then the number of boys in rank after him is:
A6
B7
C8
D9
Answer:
B. 7
Read Explanation:
Solution:
Given statement,
The total strength of the class = 60
Boys : Girls = 1 : 2
This means 20 boys and 40 girls are there in the class.
The rank of 'boy' from the top is 20th
This means 19 students ahead of the 'boy' and 7 girls ahead of the 'boy'. So 12 are boys.
Total boys = 20
Ahead of boy = 12
After boy = 20 - 12 - 1 = 7 boys
Hence, "Option (2)" is the correct answer.