Multiple choice

The marked price of a watch is 800. A shopkeeper gives two successive discounts and sells the watch at 612. If the first discount is 10%, the second discount is:

  1. 10%

  2. 12%

  3. 15%

  4. 20%

  5. 0
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The marked price is 800. After a 10% discount, the price becomes 800 * 0.9 = 720. Let the second discount be x%. Then 720 * (1 - x/100) = 612. Solving for x gives 1 - x/100 = 612/720 = 0.85, so x = 15%.

AI explanation

After the first discount of 10% on the marked price of 800, the price becomes 800 * 0.90 = 720. Let the second discount rate be x%. The final selling price is 612, so 720 * (1 - x/100) = 612. Solving for x gives x = ((720 - 612) / 720) * 100 = 15%.

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