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JAMB Mathematics 1986 Question 12

Question 12

Linear and Simultaneous Equations

In 1984, Ike was 24 years old and his father was 45 years old. In what year was Ike exactly half his father's age?

  1. A.1982
  2. B.1981
  3. C.1979
  4. D.1978.
Show the answer and explanation

Answer: B (1981)

Explanation

The age gap is always 21 years. Ike is half his father's age when Ike is 21 and his father 42, which was 3 years before 1984: 1981.