Ian borrows $3580 at 31% simple interest per year. When Ian pays the loan back 7 years later, how much interest does Ian pay?

*!The answer is not $1,109.80 i tried it was the incorrect answer..*

Ian borrows $3580 at 31% simple interest per year. When Ian pays the loan back 7 years later, how much interest does Ian pay?

*!The answer is not $1,109.80 i tried it was the incorrect answer..*

Answer:Step-by-step explanation: