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    Question

    At simple interest, a sum becomes double of itself in 8

    years. In how many years will it become 2.75 times of itself at the same rate?
    A 10 yrs Correct Answer Incorrect Answer
    B 18 yrs Correct Answer Incorrect Answer
    C 14 yrs Correct Answer Incorrect Answer
    D 20 yrs Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, If a sum doubles in 8 years, then interest earned in 8 years = principal. So, rate of interest per year = 100/8 = 12.5% To become 2.75 times, interest earned = 1.75 times of principal = 175% Time = 175 / 12.5 = 14 years Hence, the correct answer is 14 years.

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