WAEC Mathematics 2019 Question 16

Question 16

Commercial Arithmetic

Bala sold an article for ₦6,900.00 and made a profit of 15%. Calculate his percentage profit if he had sold it for ₦6,600.00.

  1. A.5%
  2. B.10%
  3. C.12%
  4. D.13%
Show the answer and explanation

Answer: B (10%)

Explanation

Cost price = 6,900 ÷ 1.15 = ₦6,000. Selling at ₦6,600 gives a profit of ₦600, which is 600/6,000 × 100 = 10%.