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JAMB Mathematics 1990 Question 7

Question 7

Commercial Arithmetic

Three brothers in a business deal shared the profit. The first received ⅓ of the profit and the second ⅔ of the remainder. If the third received the remaining N12,000.00, how much profit did they share?

  1. A.₦60,000.00
  2. B.₦54,000.00
  3. C.₦48,000.00
  4. D.₦42,000.00
Show the answer and explanation

Answer: B (₦54,000.00)

Explanation

After the first takes ⅓, ⅔ is left. The second takes ⅔ of ⅔ = 4/9, so the third gets ⅔ − 4/9 = 2/9 of the profit. 2/9 of the profit = ₦12,000, so the profit is ₦54,000.