The successive discounts 20% and 15% are equal to a single discount of__________?

A. 35%
B. 38%
C. 32%
D. 29%
E. None of these
Explanation:
Let the CP of an article be Rs. 100
Given that successive discounts are 20% and 15%.
SP = 85% of 80% of 100 = (85/100)(80/100)(100)
=> SP = Rs. 68
Clearly, single discount is 32%.