Question

N a simple interest, what will be the sum amounts of rs.1200 in 5 years and rs.1120 in 4 years?

Answer 1

p+s.i for 5 yer=1200
p+s.i for 4 yer=1120

i.e for 1 year=(1200-1120)=80
now for 4year =80/1*4=320
 hence1120-320=800