Witch is bigger 400 pints or 100 gallons

Pls , the question is in the picture!

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

Solve 3x-18=2y and 5x-6y=6 by elimination show work