Chapter 9, Problem 34P

Monica, a self-employed taxpayer, travels from her office in Boston to Lisbon, Portugal, on business. Her absence of 13 days was spent as follows:

1. a. For tax purposes, how many days has Monica spent on business?
2. b. What difference does it make?
3. c. Could Monica have spent more time than she did vacationing on the trip without loss of existing tax benefits? Explain.