I'll walk you through this. First subtract 5 from 20 because of shoes. This leaves you with 15 dollars for games. You would divide 15 dollars into 3 dollars a game. Your answer would be 5 games.
Given that G is the midpoint of FH, then: FG=GH hence; 14x+25=73-2x solving for x we get: 14x+2x=73-25 16x=48 x=48/16 x=3 therefore the length FG=14x+25 will be: 14*3+25 =67 hence FH will be: FH=67*2=134