general math MCQ #352

A Sum of money at simple interest doubles in 10 years. In how many years, will it amount to 4 times itself?

general math MCQ #352

  1. Question 1

    Q1. A Sum of money at simple interest doubles in 10 years. In how many years, will it amount to 4 times itself?

    • A) 25 years
    • B) 35 years
    • C) 30 years
    • D) 75 years

    Answer: 30 years

    Explanation: Doubles in 10 years means rate = 10% SI; to become 4 times, interest needed = 3P; time = 3P/(P×0.10) = 30 years.