Jessica plans to purchase a car in one year at a cost of $30,000. How much should be invested in an account paying 10% compounded semiannually to have the funds needed.

a. $27,210.90
b. $3,512.06
c. $24,793.50
d. $27,272.70

The Lee family plans to buy a new house in 2 years and wants to make a down payment of 25% of the estimated purchases price of $175,000. Find the amount they need to invest to make the down payment if funds earn 12% compounded semiannually.
a. $125,961.20
b. $34,653.94
c. $43,750
d. $138,615.75

Please help, show how you got the answers I get a better understanding. I have other questions like these. (These are example questions)

1 answer

just refer to your compound interest formula.

#1: solve for P where

P(1+.10/2)^(2*1) = 30000
P = 27210.88

#2: same thing

P(1+.12/2)^(2*2) = .25*175000