Simple interest on a sum at 4% per annum for 2 years is Rs.80. The C.I. on the same sum for the same period is_______?
A. Rs.81.60
B. Rs.160
C. Rs.1081.60
D. Rs.99
Explanation:
SI = 40 + 40
CI = 40 + 40 + 1.6 = 81.6