SOLUTION: Grace invested money at Edhelper bank two years ago. SHe signed up for a CD that paid 4% yearly interest, compounded semiannually. The interest is added to the balance and is accum

Algebra ->  Customizable Word Problem Solvers  -> Finance -> SOLUTION: Grace invested money at Edhelper bank two years ago. SHe signed up for a CD that paid 4% yearly interest, compounded semiannually. The interest is added to the balance and is accum      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 128201: Grace invested money at Edhelper bank two years ago. SHe signed up for a CD that paid 4% yearly interest, compounded semiannually. The interest is added to the balance and is accumulated with the original investment. At the end of two years, her account is worth $2,273.11. How much was her initial investment?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
The formula is:
A+=+P%2A%281+%2B+%28r%2Fn%29%29%5E%28nt%29
P is the initial investment
A is the amount after t years
n is the number of times
per year interest is compounded
t is the number of years invested
2273.11+=+P%2A%281+%2B+%28.04%2F2%29%29%5E%282%2A2%29
2273.11+=+P%2A%281.02%29%5E4
P+=+2273.11+%2F+1.08243
P+=+2100
Her initial investment was $2,100