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?

Answer :

I pretty sure the answer is 6.25 hr.

I added 60 and 65. I divided that number with 20.

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