1. If you had a 6 percent, $350,000 30-year fixed-rate mortgage, how long would it take before you had repaid 70% of the loan balance due? If you paid an extra $200 per month to reduce the principal due on the mortgage, how long would it take to repay 70% of the principal due? In the case where you paid an extra $200 per month, how long would it take to repay the entire loan?