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JAMB Mathematics 1993 Question 22

Question 22

Commercial Arithmetic

A man's initial salary is N540.00 a month and increases after each period of six months by N36.00 a month. Find his salary in the eighth month of the third year.

  1. A.N828.00
  2. B.N756.00
  3. C.N720.00
  4. D.N684.00
Show the answer and explanation

Answer: C (N720.00)

Explanation

The eighth month of the third year is month 32. Rises come at months 7, 13, 19, 25 and 31, which is 5 rises, so the salary is 540 + 5 × 36 = N720.00.