Question
Selling price of article ‘A’ when sold at a profit
of 40% is Rs. 270 more than its selling price when sold at a loss of 40%. If the cost price of article ‘B’ is Rs. 72 more than that of ‘A’, then find the cost price of article ‘B’.Solution
Let the cost price of article ‘A’ = Rs. ‘100y’ Then, selling price of the article when it is sold at a profit of 40% = 1.40 × 100y = Rs. ‘140y’ And, selling price of the article when it is sold at a loss of 40% = 0.60 × 100y = Rs. ‘60y’ According to the question, 140y – 60y = 270 Or, y = (270/80) Or, y = 3.375 So, cost price of article ‘A’ = 100 × 3.375 = Rs. 337.5 Therefore, cost price of article ‘B’ = 337.5 + 72 = Rs. 409.5
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