Answer:
c. $61,265
Explanation:
monthly payment under new loan = PMT(3%/12,300,-542685,0,0)
= $2573.47
saving in payment per month = 2864 - 2573.47
= $290.53
PV of interest savings = PV(3%/12,300,290.53,0,0)
= $61,266
Therefore, will save $61,266 in present value terms by using the new loan to pay-off the original loan.