Posted by Troy on .
Richard took a loan of $10000 at a rate of 5%. If he paid $2500 in interest, how long did it take him to pay off the loan?

Transitional Math 
MathMate,
Assume simple interest.
So for $10,000, the annual interest is $10,000*0.05=$500.
Number of years = $2500/$500 = 5 years.