Determine the maximum 30-year fixed-rate mortgage amount for which a couple could qualify if the rate is 5.13 percent. Assume they have other debt payments totaling $318 per month and a combined annual income of $54 comma 300 . Monthly escrow payments for real estate taxes and homeowner's insurance are estimated to be $229 . (Assume a 36 percent maximum of annual income for total debt and escrow payments.)