Question 627452
Two motorists start toward each other from cities 400 miles apart at 1 P.M. If one motorist travels at an average rate of 42 miles per hour and the other motorist travels at an average rate of 38 miles per hour, at what time will the cars meet?
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this is similar:
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From a point on a lake, two boats are driven in opposite directions, one at 9 mph and the other at 10 mph. In how many hours will they be 57 minutes apart?
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Going in opposite directions, speeds are added.
--> 19 mi/hr
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d = r*t
t = d/r