Answer:
28%
Explanation:
Borrowed amount = B = $50,000
Duration = n = 10
Number of installment paid = 40
Installment = I= $3,750 per quarter
Effective interest rate = (I*N/B)^(1/n) / 4
Effective interest rate = (3,750*40/50,000)^(1/30) / 4
Effective interest rate = 0.28
Effective interest rate = 28%