Tatis and Jimbo make $2,191.30 per month. Jimbo bought the house for 300k on a 2% yr 30yr fixed mortgage. both have 43% DTI. Tatis wants the house and can get a rate of 4% 30 yr fixed rate with a 70 LTV. Let's say There is a pay growth of 5% per year. Inflation runs at 3% per year and housing tracks inflation.

1. What can Tatis Afford to pay Jimbo in 4 years if he has a 43% DTI and a 70 LTV at 4% and 5% interest

2. What is Jimbo rate of Return over the 4 years. Annual compounding, no fees

3. Jimbo pays a 5% brokerage fee and Tatis has to pay 2% property tax and 1% of other fees.