Final answer:
After John paid $25 for 5 months and had $30 of interest added to his loan, the new total he owes for the computer is $905.
Step-by-step explanation:
John's new total he owes on the computer after paying $25 for 5 months, with $30 of interest added, can be calculated as follows:
Original price: $1000
Payments made: 5 months * $25/month = $125
Total interest: $30
Therefore, the new total owed = Original price - Payments made + Total interest
New total owed = $1000 - $125 + $30 = $905
The answer is b) $905.