Posted by Anonymous on .
You are borrowing $90,000.00 at an annual rate of 5% for 20 years .
What is the total amount you will pay ?

math 
drwls,
Are you paying off the loan in 20 years? In equal amounts? Are the payments monthly? If so, use an amortization formula.
This website, or hundreds of others easily found, may be helpful:
http://www.amortizationformula.org/