Answer :
A=p(1+rt)
A=future value
P=present value
R=interest rate
T=time
If you want to find present value
P=A/(1+rt)
If you want to find interest rate
R=[(A/p)-1]divided by t
Finally if you want to find time
T=[(A/p)-1]divided by r
A=future value
P=present value
R=interest rate
T=time
If you want to find present value
P=A/(1+rt)
If you want to find interest rate
R=[(A/p)-1]divided by t
Finally if you want to find time
T=[(A/p)-1]divided by r