Question : In a shop, a discount of 8% is provided. If the total payable after the discount is more than INR 5,000 and an additional discount of 20% is provided, then determine the final amount to be paid by the customer, if he buys 12 products each of price INR 750.
Option 1: INR 6,724
Option 2: INR 6,624
Option 3: INR 6,424
Option 4: INR 6,524
Correct Answer: INR 6,624
Solution :
First discount($a$) = 8%
Second discount($b$) = 20%
Effective discount = $a+b-\frac{ab}{100} = 20 + 8 - \frac{20×8}{100} = 28-1.6 = 26.4$%
Marked price of 1 product = INR 750
Marked price of 12 products = 12 × 750 = INR 9000
Amount discounted = 26.4% of INR 9000 = $\frac{26.4×9000}{100}$ = INR 2376
Selling price = marked price – discount = 9000 – 2376 = INR 6624
Hence, the correct answer is INR 6624.
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