Originally Posted by

**TKHunny** Rule of Thumb: If you cannot remember which formula to use, then you have not learned the material in any useful way. Sorry, but formula-based concepts are not good. Formulas only work on problems designed to meet their assumptions. Think about the structure and dissect it. There is no formula for that.

In this case, we paid down the loan $206,462.32 - $182,731.88 = $23,730.44

How much was paid in that same period? A 30 year mortgage is lokely to be monthly, so that's the last piece. We can calculate the payment and see what happens. You SHOULD be able to use either the 5-year value or the 10-year value or the original value to calculate the payment amount. (I found them to be within 1¢ of each other) Please do that to find the payment, p. Then calculate 60*p - $23,730.44 to answer the question.