Mahibur paid an interest of Rs. 750 for 2 years on a sum of Rs. 4500 on simple interest. If the rate of interest is x13% p.a, then 'x' is
Simple Interest = PRT100
Principle, P = 4500.
Rate of Interest, R = x13.
Time, T = 2.
750 = 4500×R×2100
R = 253
R = 813
Hence, x = 8.