SOLUTION: Two cars leave a restaurant at the same time and travel in opposite directions. One averages 50 miles per hour and the other averages 40 miles per hour. After how long will they be
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Question 193624: Two cars leave a restaurant at the same time and travel in opposite directions. One averages 50 miles per hour and the other averages 40 miles per hour. After how long will they be 216 miles apart?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Two cars leave a restaurant at the same time and travel in opposite directions. One averages 50 miles per hour and the other averages 40 miles per hour. After how long will they be 216 miles apart?
---------------------------------
1st car DATA:
rate = 50 mph ; time = x hrs ; distance = 50x miles
-------------------
2nd car DATA:
rate = 40 mph ; time = x hrs ; distance = 40x miles
----------------------
Equation:
miles + miles = 216 miles
50x + 40x = 216
90x = 216
x = 2.4 hrs. (time required)
=================
Cheers,
Stan H.
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