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A Shopkeeper promises to sell the cooking oil at x% profit, but he cheats while selling the oil by giving 20% less by weight. Find the value of x if he actually gains 35% profit.1). 122). 103). 84). 6 |
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Answer» Suppose the cost PRICE of 100L oil is Rs.100 Since he promises to sell the oil at x% profit, he promises that he is selling 100L oil for Rs. (100 + x) But he cheats while selling the oil by giving 20% less by weight ⇒ ACTUALLY he SELLS (100 × 0.80) = 80L oil for Rs. (100 + x) ⇒ Selling price of 100L oil = Rs. [(100 + x)/80] × 100 Since his actual profit is 35%, he will be getting Rs. 135 for 100L oil ∴ [(100 + x)/80] × 100 = 135 ⇒ 100 + x = 108 ⇒ x = 8 |
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