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Carla and Vicki left the house at the same time and began traveling down the same road in the same direction. Carla drove at a speed of 60 mph and Vicki at a speed of 65 mph. How many hours was it before Vicki was 20 miles ahead of Carla?

 Feb 27, 2020
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You must know these 3 relationships:

 

1 - Distance  = Time x rate(speed)

2 - Time =Distance / rate(speed)

3 - Rate(speed) =Distance / time.

 

Now, let us see if you can solve your own problem, preferably, by posting it here!.

 Feb 27, 2020

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