Question : The list price of an article is Rs. 900. It is available at two discounts of 20% and 10%. The selling price of the article is:
Option 1: Rs. 640
Option 2: Rs. 648
Option 3: Rs. 540
Option 4: Rs. 548
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Correct Answer: Rs. 648
Solution :
Two discounts of 20% and 10% are equivalent to $(20+10-\frac{20×10}{100}) = 28$% discount
Now the list price of the article is Rs. 900.
So, after 28% discount the selling price is = $(900×\frac{100-28}{100}) = (9×72)$ = Rs. 648
Hence, the correct answer is Rs. 648.
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