Carpet Princess is trying to increase sales, and it has instituted a new promotion. All purchases can be paid on the installment
plan with no interest, as long as the total is paid in full within 12
months. There is a $50 minimum monthly payment required. If
the Schuster family buys carpeting for $1,400 and makes only
the minimum payment for 11 months, how much will they have
to pay in the 12th month?