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JAMB Mathematics 1981 Question 9

Question 9

Commercial Arithmetic

By selling an article for ₦45.00 a man makes a profit of 8%. For how much should he have sold it in order to make a profit of 32%?

  1. A.₦180.00
  2. B.₦59.00
  3. C.₦63.00
  4. D.₦58.00
  5. E.₦55.00.
Show the answer and explanation

Answer: E (₦55.00.)

Explanation

Cost price = 45 × 100/108. A 32% profit needs 132/100 of that: 45 × 132/108 = ₦55.00.