Question 66

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

Solution

Marked price = 720

After 1st discount of 10% => 10% of 720 = $$\frac{10}{100}$$ * 720 = 72

Amount payable = 720 - 72 = 648

Let 2nd discount = $$x$$%

After 2nd discount of $$x$$%

=> $$x$$% of 648 = $$\frac{x}{100} * 648 = 6.48x$$

=> Customer will pay = 648 - $$6.48x$$ = 550.80

=> $$6.48x$$ = 97.2

=> $$x$$ = 15%

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