Question

22 The difference between the C.I. and the S.I. on 8.400 for two years is 21 at the
same rate of interest per year. Find the rate of interest.
45​

Answer 1

Answer:

D=P(

100

r

)

2

21=8400(

100

r

)

2

1=4

100

r

2

r

2

=25

r=5%