A sum of money under compound interest doubles itself in 4 years. In how many years will it become 16 times itself?

  • Option 1)

    12 years

  • Option 2)

    16 years

  • Option 3)

    10 years

  • Option 4)

    None of these

  • Option 5)

    8 years

Answers (1)

if time is constant then the ratio of principal and amount is always constant in compound interest .

in 4 years sum become doubled P become 2P
p _____4 years ____2p___4years _____8p ___4 years ____ 16 p

4+4+4+4= 16 years

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