Question

find the compound interest on rupees 2000 at 5% per year for 3 year

Answer 1

Per year 10% so per half year it is 5%
5% of 2000 is 100
5%of (2000+100) i.e 5% of 2100 is 105
5% of 2205 is 110.25
100+105+110.25=315.25
315.25 is CI for 1.5 years
So CI for 3 years will be 315.25×2=630.50