Answers

2016-01-28T13:55:46+05:30
If  it is Simple interest then,

(Principle * rate of interest * year)/100  + principle  = Amount
(3600 * r * 3.5)/100 + 3600 = 4734
(3600 * r * 3.5)/100 = 4734 - 3600
(3600 * r * 3.5)/100 = 1134
  r =  (1134 * 100)
        -----------------
           3600 * 3.5

r = 9 %

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2016-01-30T19:21:56+05:30
Please see the attachment.
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