JAMB Mathematics 2025 Objective — Question 34
Question 34 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2025 Objective paper, with the correct answer and a full explanation.
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A sum doubles in 5 years at a certain rate of simple interest. How many years will it take to triple at the same rate?
- A. 12
- B. 8
- C. 10Correct
- D. 7.5
Explanation
2P=P+PRT/100 gives R=20%. For tripling, 3P=P+P(20)(T)/100 ⇒ T=10 years.
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