What is Brenda’s deduction for: Airfare?

1.Brenda, a self-employed taxpayer, travels from Chicago to Barcelona (Spain) on business. She is gone 10 days (including 2 days of travel) during which time she spends 5 days conducting business and 3 days sightseeing. Her expenses are $1,500 (airfare), $200 per day (meals), and $400 per night (lodging). Because Brenda stayed with relatives while sightseeing, she only paid for 5 nights of lodging. What is Brenda’s deduction for: Airfare? Meals? Lodging?
2.Andrew sends Godiva chocolates to 10 of his key clients at Christmas. The chocolates cost $50 a box not including $4 for gift wrapping and shipping. How much can Andrew deduct?
3.In June of this year, Dr. and Mrs. Bret Spencer traveled to Denver to attend a three-day conference sponsored by the American Society of Implant Dentistry. Bret, a self-employed practicing oral surgeon, participated in scheduled technical sessions dealing with the latest developments in surgical procedures. On two days, Mrs. Spencer attended group meetings where various aspects of family tax planning were discussed. On the other day, she went sightseeing. Mrs. Spencer does not work for her husband, but she prepares their tax returns and handles the family investments. Expenses incurred in connection with the conference are summarized below. Airfare (two tickets) $2,000 Lodging (single and double occupancy are the same rate—$250 each day) 750 Meals ($200 × 3 days)* 600 Conference registration fee (includes $120 for Family Tax Planning sessions) 620 Car rental 300 How much, if any, of these expenses can the Spencers deduct?
4.Christine is a full-time fourth-grade teacher at Vireo Academy. During the current year, she spends $1,400 for classroom supplies. On the submission of adequate substantiation, Vireo reimburses her for $500 of these expenses—the maximum reimbursement allowed for supplies under school policy. [The reimbursement is not shown as income (Box 1) of Form W–2 given to Christine by Vireo.] What are the income tax consequences of the $1,400 if Christine: Itemizes her deductions from AGI? Chooses the standard deduction?
Please Complete the assigned problems using MS-Excel.