SOLUTION: jeff starts driving at 60 mph from the same point that lauren starts driving 50 mph. they drive in opposite directions and lauren has a half an hour head start. how long will jeff
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Question 511645: jeff starts driving at 60 mph from the same point that lauren starts driving 50 mph. they drive in opposite directions and lauren has a half an hour head start. how long will jeff drive before they are 300 miles apart
You can put this solution on YOUR website! d = rt is the basic distance equation.
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Lauren's d = 50*t
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Jeff's d1 = 60(t - 1/2)
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d + d1 = 300
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50t + 60t - 30 = 300
110t = 330
t = 3 hr
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Check to ensure the distance is 300 miles.
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Lauren drives 3 hr @ 50 mph = 150 miles.
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Jeff drives 2.5 hr @ 60 mph = 150 miles.
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OK.
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Answer: Jeff will have driven for 2 1/2 hrs when then are 300 miles apart.
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Done.
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