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JAMB Mathematics 1990 Question 24

Question 24

Algebraic Expressions

A car painter charges N40.00 per day for himself and N10.00 per day for his assistant. If a fleet of cars were painted for N2,000.00 and the painter worked 10 days more than his assistant, how much did the assistant received?

  1. A.N32.00
  2. B.N320.00
  3. C.N420.00
  4. D.N1,680.00
Show the answer and explanation

Answer: B (N320.00)

Explanation

If the assistant worked d days, 40(d + 10) + 10d = 2000, so 50d = 1600 and d = 32. The assistant received 32 × N10 = N320.