SOLUTION: Jack drove to New York City at 60 mph. Jill drove to the city at 40mph. If their combined travel time was 15 hours, how far away was the city?
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Question 915440: Jack drove to New York City at 60 mph. Jill drove to the city at 40mph. If their combined travel time was 15 hours, how far away was the city?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
D/r = t
|Multiplying thru by 120 so as all denominators = 1
2D + 3D = 15(120)
5D = 15(120)
D = 15(120)/5 = 360mi
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