1.

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

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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