Answer: About 30,000 men's shirts were given away.
About 17,000 women's shirts were given away.
Step-by-step explanation:
In the 2011 New York City Marathon, 29,867 men finished the race, and 16,928 women finished the race.
Each finisher was given a t-shirt.
Then, the number of men's shirts were given away= Number of men finished the race= 
The number of women's shirts were given away= Number of women finished the race= 