Question

At what rate percent will a sum of Rs. 4000 yield compound interest of Rs. 410 in 2 years

Answer 1

10 is 20% of 200 for 2nd year and 200 is 20% of 4000 for 1st year

Answer 2

principal = 4000
simple intrest = 410
time = 2 years
formula ;
rate = SI * 100
------------
p * t
410 * 100. 8
-------------- = --- = 1.6 %
4000 * 2 5