Question 414615
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Hi
The bus travels 1 hr more than the car
Let x and (x+1)represent the time traveled for car and bus respectively
Question states***  (NOte: D = r*t)
  50mph*x = 40mph*(x+1)
Solving for x
     10x = 40
       x = 4hr, time for car.  Time the bus traveled was 5hr
CHECKING our Answer***
  50mph*4hr = 40mph*5hr = 200mi