Answer
Interest = $1200
Explanation:
Time = 6 years
= 6 × 12 = 72 months
Monthly payment = $225
Total amount paid = Monthly payment × no. of months
= 225 × 72 = $16200
Now, using the formula :
Interest = Amount - Principal
= 16200 - 15000
= $1200
Hence, the interest paid by Travis = $1200