Question 605895:  If a business borrows $20,000 and repays $33,500 in 5 years, what is the simple interest rate? 
1  %  
 Answer by jim_thompson5910(35256)      (Show Source): 
You can  put this solution on YOUR website! The amount of interest alone is 33500 - 20000 = 13500
 
 
So I = 13500
 
 
The principle is $20,000, so P = 20000
 
 
The time of the loan is 5 years, so t = 5
 
 
 
Plug all this into I = Prt and solve for r
 
 
I = Prt
 
 
13500 = 20000*r*5
 
 
13500 = 20000*5*r
 
 
13500 = 100000r
 
 
13500/100000 = r
 
 
0.135 = r
 
 
r = 0.135
 
 
So the simple interest rate is 13.5%. 
  | 
 
  
 
 |   
 
 |