JAMB Mathematics 2018 Objective — Question 32
Question 32 of 39 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2018 Objective paper, with the correct answer and a full explanation.
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A father is now three times as old as his son. Twelve years ago, he was six times as old as his son. How old are the son and father ?
- A. 20 and 45
- B. 100 and 150
- C. 20 and 60Correct
- D. 35 and 75
Explanation
Let son=x, father=3x. 12 years ago: 3x−12=6(x−12) → 3x−12=6x−72 → 60=3x → x=20. Father=60.
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