10 A train leaves Buffalo travelling west at 60 miles per ho

10

A train leaves Buffalo travelling west at 60 miles per hour. An hour later, another train leaves Buffalo travelling east at 80 miles per hour. When are the two trains the same distance from Buffalo? Show the equation you use. A red balloon starts at 7.3 meters off the ground and rises at 2.6 meters per second. A blue balloon starts at 12.4 meters off the ground and rises at 1.5 meters per second. Write and solve an equation to determine when the

Solution

(10)  

      train leaves Buffalo traveling west = 60 mph

    An hour later, another train leaves Buffalo traveling east at = 80 mph

so, from ,

   d1 = d2

so,   60 + 60 t = 80t

80t - 60t = 60

20t = 60

Hence t = 60/20 = 3 hour