In 2002, Paul purchased a house and took out a 25-year $50,000 mortgage at 6% interest compounded monthly. In 2012,...

In 2002, Paul purchased a house and took out a 25-year $50,000 mortgage at 6% interest compounded monthly. In 2012, he sold the house for $150,000. How much money did he have left after he paid the bank the unpaid balance on the mortgage?