A and B are two heavy steel blocks. If B is placed on the top of A, the weight increases by 60%. How much weight will reduce with respect to the total weight of A and B, if B is removed from the top of A?
A
60%
B
45.5%
C
40%
D
37.5%
Correct Answer: Option D
Explanation
This is a classic percentage question where the main trick is the change in the reference point, something UPSC has asked many times before, like in 2016 and 2015 [2, 54]. The easiest way to solve this is by assuming a simple number.