Answer:
The annual interest rate charged would be 8%
Explanation:
The annual interest rate which is charged by the parents for the loan is computed as:
Interest rate = (Amount repaid for loan - Lent amount by parents) /Lent amount by parents × 100
where
Lent amount by parents is $400
Amount repaid for loan is $432
Putting the values above:
Interest rate = ($432 - $400) / $400 × 100
Interest rate = $32/ $400 × 100
Interest rate = 0.08 × 100
Interest rate = 8%
