Question

at what interest rate % per annum will rs 3600 amount to rs 4464 in 3 yrs

Answer 1

3600 x .3 = 4464

x = 4464/10800
= 1/2.4
= 0.4

so 40%

Answer 2

Dear for your brainic help the answer is
Formula of rate = S.I. *100
------------
P*T
=4464-3600
=864
=864*100
---------------
3600 *3
=72%