Multiple choice

If two successive discounts, each of 20% on the marked price of an article, are equal to a single discount of Rs. 331.20, then the marked price (in Rs.) of the article is:

  1. 645

  2. 1,200

  3. 920

  4. 750
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Successive discounts of 20% mean the price becomes 0.8 * 0.8 = 0.64 of the original. Total discount = 1 - 0.64 = 0.36. 0.36 * MP = 331.20. MP = 331.20 / 0.36 = 920.

AI explanation

Let the marked price be M. The single equivalent discount for two successive 20% discounts is calculated as 20 + 20 - (20 * 20) / 100, which equals 36%. This 36% of the marked price equals the discount amount of Rs. 331.20, giving the equation 0.36M = 331.20. Dividing 331.20 by 0.36 results in a marked price of Rs. 920.

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