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  1. Simple interest on a certain sum for 6 years is 9/25 of the sum. The rate of interest is
    1. 6%
    2. 6
      1
      %
      2
    3. 8%
    4. 8
      1
      %
      2
Correct Option: A

According to question ,

Simple Interest
=
9
Principal 25

Rate =
S.I × 100
Principal × Time

Rate =
9
×
100
= 6%´per annum
256

Second method to solve this question :
Here, T = 6 years , n =
9
25

Here, n =
9
T = 6 years,
25

R =
n × 100
T

R =
9
×
100
256

R = 6%



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