Xiao Zhang deposits 1000 yuan into the bank at an annual interest rate of 8%, which is calculated once a year. What is the final value of compound interest after 10 years? If Xiao Zhang wants to have 21589.25 yuan to buy a set of furniture in 10 years, assuming that the annual interest rate is 8%, and the interest is calculated once a year, how much money should he deposit in the bank now?

Xiao Zhang deposits 1000 yuan into the bank at an annual interest rate of 8%, which is calculated once a year. What is the final value of compound interest after 10 years? If Xiao Zhang wants to have 21589.25 yuan to buy a set of furniture in 10 years, assuming that the annual interest rate is 8%, and the interest is calculated once a year, how much money should he deposit in the bank now?

Fv (final value) = PV (present value) * fvif (I, n) (compound interest final value coefficient)
=1000*FVIF（8%,10）
=1000*2.1589
=2158.9
PV (compound interest present value) = Fv (final value) * pvif (I, n) (compound interest present value coefficient)
=21589.25*PVIF（8%,10）
=21589.25*0.4632
=10000

What is the final value of compound interest in 30 years with 100 yuan deposited in the bank, 8% annual interest rate and compound interest once every 3 months?

=100*（1+8%*3/12）120
The following 120 refers to 120 power

Make the final value of compound interest become twice of the principal after 5 years, compound interest once every half a year, and calculate the annual interest rate

1*(1+x)^10=2
x=7.2%
Annual interest rate = 14.4%