SOLUTION: At 10:00 am. a car leaves a house at a rate of 60mph. At the same time, another car leaves the same house at a rate of 50mph in the opposite direction. At what clock time will the
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Question 838352: At 10:00 am. a car leaves a house at a rate of 60mph. At the same time, another car leaves the same house at a rate of 50mph in the opposite direction. At what clock time will the cars be 330 miles apart?
I tried using a graph my teacher gave us to solve these, but I am so lost. I have absolutely no idea how to do this problem. Help will be much appreciated. Thank you! Found 2 solutions by richwmiller, josmiceli:Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! Their speeds will add since they are going
in opposite directions
You can think of one car ( either car ) as
standing still and the other one moving
away at the sum of their speeds
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The sum of the speeds is: mi/hr
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Let = the time in hours that elapses
until they are miles apart
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Now I can say: hrs hrs after 10 AM is 1 PM
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You can check this method by saying is the distance the faster car goes in hrs is the distance the slower car goes in hrs
------------------------------ mi
and mi
and mi
as it should- OK
