3) Profit and Loss

Successive discounts of 10% , 12% and 15% amount to a single discount of:
(A)32.68%  (B)35.28%  (C)36.68%  (D)None of these

Answer:  A


Description:
Let marked price be Rs.100.
Then S.P =85% of 88% of  90% of 100
= [(85/100)*(88/100)*(90/100)]
=Rs.67.32
Therefore  Single Discount =(100-67.32)% = 32.68%