Payments:
-- Down . . . . . $6,000
-- Monthly:
($390/month)x(70 months) = $27,300
Total payments: (6,000 + 27,300) = $33,300
Actual cost of the truck = $28,000
Cost of not paying in full when he got the truck ("finance" charges") =
(33,300 - 28,000) = $5,300
