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If the difference between discount of 50% and two successive discounts of 30% on a certain bill is Rs. 6, then what is the amount (in Rs.) of the bill?1). 3002). 7503). 6004). 800 |
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Answer» Let, amount of the bill = Rs. X In the 1st CASE, After a discount of 50%, price = x - x × 50/100 = Rs. 0.5x In the 2nd case, After discount of 30%, price = x - x × 30/100 = Rs. 0.7x After another discount of 30%, price = 0.7x - 0.7x × 30/100 = Rs. 0.49x According to problem, ⇒ 0.5x - 0.49x = 6 ⇒ 0.01x = 6 ⇒ x = 600 ∴ amount of the bill = Rs. 600 |
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