To discharge a debt, with the interest of 7% compounded monthly, Mark agrees to pay P500 at the beginning of each month for 6 years. 1. Find the original size of the debt. 2. Find the remaining...

To discharge a debt, with the interest of 7% compounded monthly, Mark agrees to pay P500 at the beginning of each month for 6 years. 1. Find the original size of the debt. 2. Find the remaining liability of Mark just after he makes his 5th payment 3. Find the remaining liability of mark just before he makes his 10th payment.