SOLUTION: Find the unknown qanity for an account that earns simple annual interest. A = $579, P = $300, r = 6.2%, t=___ Any help with this equation would be <b>Greatly</b> appreci

Algebra ->  Equations -> SOLUTION: Find the unknown qanity for an account that earns simple annual interest. A = $579, P = $300, r = 6.2%, t=___ Any help with this equation would be <b>Greatly</b> appreci      Log On


   



Question 125268: Find the unknown qanity for an account that earns simple annual interest.
A = $579, P = $300,
r = 6.2%, t=___
Any help with this equation would be Greatly appreciated.

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
A+=+P%281+%2B+r%2At%29
579+=+300%281+%2B+.062%2At%29
579+=+300+%2B+18.6t
18.6t+=+279
t+=+15 years answer
At the end of each year with simple interest I have:
1st year: $300 + 1*.062*300
2nd year $300 + 2*.062*300
3rd year $300 + 3*.062*300
etc.
So the general formula is
A = P(1 + rt)
check answer
579+=+300%281+%2B+.062%2At%29
579+=+300+%2B+300%2A.062%2A15
579+=+300+%2B279
579+=+579
OK