Robin and Robbie, both age 45, are married and filled a joint return for 2015. Robbie earned a salary of $150,000 in 2015 and is covered by his employers 401(k) plan. Robin is not employed, and the couple had no other income. On April 14, 2016, Robbie contribute $5,500 to an IRA for himself and $5,500 to an IRA for Robin. What is maximum allowable IRA deduction on the join return for tax year 2015?