SOLUTION: Two trucks leave a warehouse at the same time. One travels due north at an average speed of 61 miles per hour, and the other travels due south at an average speed of 59 miles per h

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Question 900864: Two trucks leave a warehouse at the same time. One travels due north at an average speed of 61 miles per hour, and the other travels due south at an average speed of 59 miles per hour. After how many hours will the two trucks be 600 miles apart?
Found 2 solutions by lwsshak3, josmiceli:
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Two trucks leave a warehouse at the same time. One travels due north at an average speed of 61 miles per hour, and the other travels due south at an average speed of 59 miles per hour. After how many hours will the two trucks be 600 miles apart?
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The trucks are effectively traveling apart at a speed of 61+59=120 mph
Travel time=distance/speed=600/120=5
After how many hours will the two trucks be 600 miles apart? 5

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Think of one track as standing still and
the other moving at the sum of their speeds
+600+=+%28+61+%2B+59+%29%2At+
+600+=+120t+
+t+=+5+
The two trucks be 600 miles apart in 5 hrs
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check:
+d%5B1%5D+=+61%2A5+
+d%5B1%5D+=+305+
and
+d%5B2%5D+=+59%2A5+
+d%5B2%5D+=+295+
+d%5B1%5D+%2B+d%5B2%5D+=+305+%2B+295+
+d%5B1%5D+%2B+d%5B2%5D+=+600+
OK