Question

x invests rs 100 at the end of 1981 rs 200 at the end of 1982 rs 300 at the end of 1983 rs 400 at the end of 1984 rs 500at the end of 1985 if interest is compounded at 10% per annum what will be the amount of his investment at the end of 1986​

Answer 1

For, Rs 100 @ 1981

A = $ 161.05

A = P + I where

P (principal) = $ 100.00

I (interest) = $ 61.05

For Rs 200 @ 1982

A = $ 292.82

A = P + I where

P (principal) = $ 200.00

I (interest) = $ 92.82

For Rs 300 @ 1983

A = $ 399.30

A = P + I where

P (principal) = $ 300.00

I (interest) = $ 99.30

For Rs 400 @ 1984

A = $ 484.00

A = P + I where

P (principal) = $ 400.00

I (interest) = $ 84.00

For Rs 500 @ 1985

A = $ 550.00

A = P + I where

P (principal) = $ 500.00

I (interest) = $ 50.00

Total amount at the end of 1986

= 161.05 + 292.82 + 399.30 + 484 + 550 =

1,887.17