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The market price of a clock is ₹ 3200 . It is to be sold at ₹ 2448 at two successive discounts . If the first discount is 10 %, then the second discount is
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- 5 %
- 10 %
- 15 %
- 20 %
Correct Option: C
Let rate of second discount = r %
MP = ₹ 3200 , SP = ₹ 2448 ,
r1 = 10 % and r2 = r %
∴ y = MP x (100 - r1/100) (100 - r2/100)
⇒ 2448 = [3200 x (100 - 10) x (100 - r)] / (100 x 100)
⇒ (2448 x 100 x 100) / (3200 x 90) = 100 - r
∴ r = 100 - 85 = 15 %
