She can pay the loan 18 months.
Step-by-step explanation:
Given,
Tracie has to pay $ 25 each month to pay the loan.
She has $ 450 in her account to pay the loan.
To find the number of months she can pay the loan.
We will apply the <u>unitary method</u>.
$ 25 she can pay in 1 month
$ 1 she will pay in
month
$ 450 she will pay in
× 450 months.
= 
= 18 months