If we refer his car payments by month base on the 48-month car loan at 6.8%, his payment will be $1,462/month. And if we refer to the full cost of the car by using the 48-month loan it can cost $74,476. After 20 months mike decided to pay the remaining payments for his car. So if mike pays responsibly to his $1,462/month, it cost to $29,240. To get the remaining payment just subtract the total cost of the car to the 2o months he pays the loan. So, $74,476 - $29,240 = $45,236 this is the amount that he need to pay after 20 months.