Compute the 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 reports $600 in dividends income and $2,880 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 $12,495.	$
c.	Shonda is age 68 and single. She is claimed by her daughter as a dependent. Her earned income is $570, and her interest income is $470.	$
d.	Frazier, age 50, is married but is filing a separate return. His wife Emma itemizes her deductions.