# What is The Second Discount Rate ? If

Answered

The marked price of a watch was Rs. 720. A man bought the same watch for Rs. 550.80 after getting two successive discount, the first being 10%. The successive discount rate is

- 12 %
- 18 %
- 15 %
- 14 %

Best answer

**Answer: (3) 15 %**

**Explanation:-**

Let the second discount rate be X %

According to the question,

(100 – X) of 90 % of 720 = 550.80

720 x 90 x (100 – X) / 100 x 100 = 550.80

72 x 9 x (100 – X) / 100 = 550.80

648 x ( 100 – X) = 550.80 x 100

648 x 100 – 648 x X = 55080

– 648 X = 55080 – 64800

– 648 X = – 9720

X = 9720/648

X = 15

Then, the successive discount rate is 15 %.

Hence, the answer is (3) 15 %.