Question

    A sum doubles in seven years at simple interest. In how

    many years will the sum become five times the original sum?
    A 25 Correct Answer Incorrect Answer
    B 28 Correct Answer Incorrect Answer
    C 26 Correct Answer Incorrect Answer
    D 30 Correct Answer Incorrect Answer

    Solution

    years     times 7             2= (2-1) =1 x             5= (5-1) =4 x ×1 = 7×4 x = 28years

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