Multiple choice

A retailer purchases a wireless earbuds set for Rs. 2,400. At a fixed list price, it is usually sold with a discount that gives the retailer a 15% profit on cost. During a festival sale, the discount was doubled, and the profit in that case was Rs. 120. The discount rate (%) at which the profit percentage equals the discount percentage is closest to

  1. 8

  2. 9

  3. 11

  4. 13
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cost = 2400. 15% profit = 360. Selling price = 2760. Let list price be L and discount be D. Usually, L(1-D) = 2760. During sale, L(1-2D) = 2400 + 120 = 2520. Solving these gives D = 0.11 or 11%.

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