The marked price of a watch was Rs. 720/-. A man bought the same for Rs. 550.80, after getting two successive discount, the first art 10%. What was the second discount rate?
The marked price of a watch was Rs. 720/-. A man bought the same for Rs. 550.80, after getting two successive discount, the first art 10%. What was the second discount rate?
[A]14%
[B]15%
[C]12%
[D]18%
15%
Marked price = Rs. 720
Actual price = Rs. 550.80
First discount = 10%
Let the second discount be x%
Then, we can write 720(1 – 0.10)(1 – 0.01x) = 550.80
Hence option [C] is the right answer.
