Please show formula for excel: An investor has owned a property for 15 years, the value of which is now to $200,000. The balance on the original mortgage if $100,00 and the monthly payments are $1,100 with 15 years remaining. He would like to obtain $50,000 in additional financing.Alternatively, a wraparound loan for $150,000 can be obtained at a 12% rate and a 15 year term. All loans are fully amortizing. Which alternative should the investor choose a wraparound for $150,000 at 12% or add a home equity loan of $50,000 at 14%.