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Discussion

  1. In what time will the simple interest on Rs 400 at 10% per annum be the same as the simple interest on Rs 1000 for 4 year at 4 % per annum?
    1. 2 yrs
    2. 3 yrs
    3. 4 yrs
    4. 6 yrs
  1. Correct Option: C

    Here , P= Rs 1000
    T= 4 yrs
    R= 4 %
    where, P= Principal
    T= Time
    R= Rate
    Since , Simple Interest on Rs 1000=(1000 × 4 × 4)/100
    = Rs 160

    now, simple interest=Rs 160
    P = Rs 400
    R = 10 %
    then, T=(100 × SI)/P × R
    = (100 × 160)/(400 × 10)
    = 4 yr


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