Compute the 2015 standard deduction for the following taxpayers. If an amount is zero, enter "0".

a.	Margie is 15 and claimed as a dependent by her parents. She has $625 in dividends income and $2,520 in wages from a part-time job.

b.	Ruby and Woody are married and file a joint tax return. Ruby is age 66 and Woody is 69. Their taxable retirement income is $11,390.

c.	Shonda is age 68 and single. She is claimed by her daughter as a dependent. Her earned income is $600 and her interest income is $785.

d.	Frazier, age 48, is married but is filing a separate return. His wife itemizes her deductions.