To find the down payment, we need to subtract the finance charge and sum of all the monthly payments from the total cost of the raincoat.
Total cost of the raincoat = $139
Sum of all the monthly payments = $12 x 12 = $144
Finance charge = $30
Down payment = Total cost of the raincoat - Sum of all the monthly payments - Finance charge
Down payment = $139 - $144 - $30
Down payment = $-35
The down payment is negative, which does not make sense in this context. Therefore, something is not right with the given information.