Martha has $100 in a savings account. Every month, she deposits $250 into her savings account. She sees an advertisement for a new refrigerator that’s available for $1,200. She calls the store and talks to a salesperson, who says she can purchase the refrigerator interest free by paying $80 per month until the balance of the purchase is paid. At the end of months, she still has owes $720 for the refrigerator.

The answer Is 6 months. At the end of 6 months, she still owes $720 for the refrigerator.

Step-by-step explanation:

If your paying $80 per month for a fridge that costs $1200 it will take 15 months to pay for it. If you have $720 left to pay you divide that by $80(payment rate per month)which gives you 9 (months) and that is how many months you have left to pay for it, But you're looking for how many months you have already payed for it so you would subtract 9 from 15 and that gives you 6, which is the number of months you have already payed for it.

6 on both sides and twelve on the top and the bottom

step-by-step explanation: