Answer:
142.1%
Step-by-step explanation:
the total payments needed to pay off the 30 year loan = 30 years x 12 months x $599.55 = $215,838
the total payments needed to pay off the 15 year loan = 15 years x 12 months x $843.86 = $151,894.80
the relationship between total payments = $215,838 / $151,894.80 = 1.421 = 142.1%