Richard Traveled from New Orleans to New York for Both

Essay

Richard traveled from New Orleans to New York for both business and vacation.He spent 4 days conducting business and some days vacationing.He incurred the following expenses:
What is his miscellaneous itemized deduction (before the floor),assuming Richard is an employee and is not reimbursed,under the following two circumstances?
a.He spends three days on vacation,in addition to the business days.
b.He spends six days on vacation,in addition to the business days.