arithmetic - on a sum of money the simple interest for 2 years is rs 660while the compound interest is rs69630the rate of interest being the same in both the cases the rate of interest is - skillgun

Difference in C.I and S.I for 2 years = Rs(696.30-660)
=Rs. 36.30.
S.I for one years = Rs330.
S.I on Rs.330 for 1 year =Rs. 36.30
Rate = (100x36.30/330x1)%
=11%.