Q: Perry, Dana, Charlie, and Phil played golf together every week. At the end of the season, Perry had won five more games than Dana, but Charlie had won 2 games fewer than Dana. Phil had won 3 games more than Charlie did. If Phil won a total of 12 games, how many more games did Perry win than did Phil?
A: If Phil had won 3 games more than did Charlie, and Phil won 12 games, then Charlie won 12 - 3 = 9 games. If Charlie had won 2 games fewer than Dana, and Charlie won 9 games, then Dana won 9 + 2 = 11 games. If Perry had won five more games than did Dana, and Dana won 11 games, then Perry won 11 + 5 = 16 games. Thus, Perry won 16 - 12 = 4 more games than did Phil. The answer is 4.

Q: John volunteers at a shelter twice a month for 3 hours at a time. How many hours does he volunteer per year?
A: He volunteers 2 * 12 = 24 times a year. So he volunteers for 24 * 3 = 72 hours. The answer is 72.

Q: Addilynn went to the grocery store and bought six dozen eggs for use in her house. After two weeks, she used half of the eggs, then accidentally broke 15 of the remaining eggs while moving them to clean the shelves. How many eggs are left on the shelf?
A:
Since a dozen has 12 eggs, the total number of eggs that Addilynn bought is 6 dozen * 12 eggs / dozen = 72 eggs. If she used half of the eggs, the number of eggs left is 72 eggs / 2 = 36 eggs. While moving the eggs to clean the shelves, she broke 15 eggs, leaving 36 eggs - 15 eggs = 21 eggs. The answer is 21.