Home » Aptitude » Simple interest » Question
  1. If a sum of money doubles itself in 8 years, then the interest rate in percentage is
    1. 8
      1
      %
      2
    2. 10%
    3. 10
      1
      %
      2
    4. 12
      1
      %
      2
Correct Option: D

Let principal be Rs. p.
From question ,
∴ Amount = Rs. 2p
Simple Interest = Amount - Principal = Rs. (2p – p) = Rs. p

∴ Rate =
SI × 100
Principal × Time

Rate =
p × 100
p × 8

=
25
2

Rate = 12
1
% per annum
2



Your comments will be displayed only after manual approval.