find difference between ci and si for a sum of Rs100000 was

find difference between ci and si for a sum of Rs.100000 was invested for 2 years at the state bank of india

let the rate of interest be r.

pnr/100 = 2000r is the total simple interest

100000 + 1000r is the amount at the end of 1st year

so coumpound interest at the end of 2 year = (1000 r + 10r^2 ) + 100000 + 1000r - 100000 = 10r^2 + 2000r

difference in Si and Ci = 10r^2