Rick and Carol Ryan, married taxpayers, took out a mortgage on their home for $160,000 ten years ago. In October of the current year, when the home had a fair market value of $200,000 and they owed $125,000 on the mortgage, the Ryans took out a home equity loan for $110,000. They used the funds to purchase a sailboat to be used for recreational purposes. The sailboat does not qualify as a residence. What is the maximum amount of debt on which the Ryans can deduct home equity interest?