Multiple choice general knowledge math & puzzles

If a marchent offers discount of 40% on the marked price of goods and ends up selling the goods at cost price, What was the mark up ?

  1. 28.57%

  2. 40%

  3. 66.66%

  4. 58.33%

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let CP = cost price. MP = CP × (1 + markup). After 40% discount: SP = MP × 0.6 = CP. So (1 + markup) × 0.6 = 1, giving markup = 66.66%.