Jul 29, 2010 #1 D Delores New member Joined Sep 6, 2009 Messages 3 Reaction score 0 Points 1 passenger train travels 320 miles? in the same time it takes the freight train to travel 220 miles find the speed of each train
passenger train travels 320 miles? in the same time it takes the freight train to travel 220 miles find the speed of each train
Aug 9, 2010 #2 C cheddarbetter2009 New member Joined Aug 9, 2010 Messages 1 Reaction score 0 Points 1 let T = 320 X and T = 220 Y Y = 20 + X 320X = 220Y Y = 1.455 X 1.455X = 20 + X .455X = 20 X = 43.96 mph Y = 43.96 +20 Y = 63.96 mph if you sub them back, you get it took each about 5 hours to travel their respected distances
let T = 320 X and T = 220 Y Y = 20 + X 320X = 220Y Y = 1.455 X 1.455X = 20 + X .455X = 20 X = 43.96 mph Y = 43.96 +20 Y = 63.96 mph if you sub them back, you get it took each about 5 hours to travel their respected distances