Question 426623
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Hi
Let x and (x+4) represent the time the car and truck traveld respectively
Question states*** Note: D = r*t  (distance the same for both)
  55x = 45(x+4)
Solving for x
   10x = 180     
     x = 18hr, time car traveled.     
    55mph*18hr = 990mi, how far they traveled.
 
CHECKING our Answer***
     55mph*18hr = 990mi = 45mph*22hr