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?
How many games did Charlie win? ** If Phil had won 3 games more than did Charlie, and Phil won 12 games, then Charlie won 12-3=<<12-3=9>>9 games.
How many games did Dana win? ** If Charlie had won 2 games fewer than Dana, and Charlie won 9 games, then Dana won 9+2=<<9+2=11>>11 games.
How many games did Perry win? ** If Perry had won five more games than did Dana, and Dana won 11 games, then Perry won 11+5=<<11+5=16>>16 games.
How many more games did Perry win than did Phil? ** Thus, Perry won 16-12=<<16-12=4>>4 more games than did Phil.
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