Answer: $2256
Explanation:
1. Firstly, figure out how much should be repaid in total (including the interest rate). 5.7/100 x 8000 = $456
2. Add $456 to $8000 giving it a total of $8456 to be repaid.
3. Subtract $2800, and $3400 from it, leaving a grand total of $2256 to be repaid.