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WAEC Mathematics 2017 Question 10

Question 10

Commercial Arithmetic

A sum of N18,100.00 was shared among 5 boys and 4 girls with each boy taking N20.00 more than each girl. Find a boy's share.

  1. A.N1,820.00
  2. B.N2,000.00
  3. C.N2,020.00
  4. D.N2,040.00
Show the answer and explanation

Answer: C (N2,020.00)

Explanation

If a girl gets g, then 5(g + 20) + 4g = 18 100, so 9g = 18 000, g = 2000 and a boy gets N2,020.