Susie's monthly payment can be calculated using the loan amount formula:
Loan Amount = Monthly Payment x [(1 - (1 + Monthly Interest Rate)^-Number of Months) / Monthly Interest Rate]
where Monthly Interest Rate = (10%/12) = 0.0083 (since APR is annual percentage rate, we divide it by 12 to get monthly rate), Number of Months = 72, and Loan Amount = $16,000 (since she is not making any down payment).
Substituting the values:
$16,000 = Monthly Payment x [(1 - (1 + 0.0083)^-72) / 0.0083]
Solving for Monthly Payment:
Monthly Payment = $276.76 (rounded to the nearest cent)
Susie's monthly payment is within her budget of $300/month.
The total amount Susie will pay over the life of the loan is:
Total Amount Paid = Monthly Payment x Number of Months = $276.76 x 72 = $19,903.52
Therefore, the car will cost Susie a total of $19,903.52 after the loan has been paid in full.