InterviewSolution
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A man bought3 oranges for Rs. 5, 5 oranges for Rs. 7 and 7 oranges for Rs. 9. Find the approx selling price per article to make a profit of 10%?1. Rs. 1.62. Rs. 2.33. Rs. 2.74. Rs. 1.2 |
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Answer» Correct Answer - Option 1 : Rs. 1.6 Given: CP of 3 oranges = Rs. 5 CP of 5oranges = Rs. 7 CP of 7oranges = Rs. 9 Concept: To do this type sum, equal the number of articles bought. Calculation: Taking LCMof the number of oranges bought; LCM of 3, 5and 7= 105 ∴ Price of 3 oranges = Rs 7 ⇒ Price of 105oranges = Rs 5× 35 = Rs. 175 Price of 5oranges = Rs 7 ⇒ Price of 105oranges = Rs 7× 21= Rs. 147 Price of 7oranges = Rs 9 ⇒ Price of 105oranges = Rs 9× 15= Rs. 135 ∴ Price of 315 oranges = Rs. 175 + Rs. 147+ Rs. 135 = Rs. 457 ∴ Selling price with 10% profit = 457 + (10/100)× 457 = 457 + 45.7 = Rs. 502.7 ∴ Selling Price of eacharticle = 502.7/315 = Rs. 1.6Approx |
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