SOLUTION: i need help on this question. Ryan is going to invest $1200 at a 7% annual interert rate. How long will it take him to earn $252 in interest(I=prt)....pleas i really need help

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: i need help on this question. Ryan is going to invest $1200 at a 7% annual interert rate. How long will it take him to earn $252 in interest(I=prt)....pleas i really need help      Log On


   



Question 374374: i need help on this question.
Ryan is going to invest $1200 at a 7% annual interert rate. How long will it take him to earn $252 in interest(I=prt)....pleas i really need help

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Ryan is going to invest $1200 at a 7% annual interest rate.
How long will it take him to earn $252 in interest(I=prt)
:
Write the equation:
p * r * t = I
:
replace p, r, and I
1200 * .07 * t = 252
:
84t = 252
t = 252%2F84
t = 3 yrs
:
:
Check it
I = 1200 * .07 * 3