Question

the distance between the earth and a planet is 1000000 km if this distance is decreasing by 2.5% every year then find the distance between the planet and the earth after 3 years​

Answer 1

F=P(1-i)^n

F=future value

P=present value

i= rate of decreasing

n=time period in years..

given

P=1000000=10^6

i=2.5%

n=3years

F=10^6[1-(2.5)/100]^3

=926859.375km