Mary used three times more material to make her costume than Amyused, and 2 yards of material was not used. How many yards of material did Amy use forher costume?

(2) A truck traveling ata constant rate of 45 miles per hour leaves Albany. One hourlater a car traveling at a constant rate of 60 miles per hour also leavesAlbany traveling in the same direction on the same highway. How long will it take forthe car to catch up to the truck, if both vehicles continue in the same direction on thehighway?