In a class of 45 students, a boy is ranked 20th. When two boys joined, his rank was dropped by one. What is his new rank from the end?
After 2 boys joined, total strength of class = 45 + 2 = 47
As rank was dropped by one from 20th rank, new rank is 21st.
Rank of the boy from the beginning = 21
Number of students below his rank = 47 - 21 = 26
Rank from the end = (47 - 21) + 1 = 27
The correct option is D.