Step-by-step explanation:
$450×15%= D (downpayment)
$450-D= B (balance)
B÷18= MB (monthly balance)
MB ×12%= I (interest)
MB+I= MI (monthly installment)
(MI×18)+D= Total Paid
...and whomever you're doing the work for, see if they'll give you extra credit for correcting their TWICE misspelled word.
Catch is...YOU have to find it! (:
