Two numbers X and Y are respectively 20% and 28% less than a third number Z. By what percentage is the number Y less than the number X?
A
12%
B
10%
C
9%
D
8%
Correct Answer: Option B
Explanation
This is a very common type of percentage question in aptitude tests. The best way to solve it is to avoid variables and use a simple number. Since it's a percentage problem, let's assume the third