SOLUTION: Two trains leave stations 240 mils apart at the same time and travel towards each other. one travels at 85 miles per hour. While the other travels at 65 miles per hour. How long wi

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Question 897718: Two trains leave stations 240 mils apart at the same time and travel towards each other. one travels at 85 miles per hour. While the other travels at 65 miles per hour. How long will it take for the teo trains to meet?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Think of one train as standing still and
the other one moving at the sum of their speeds
Let +t+ = time in hrs for them to meet
+240+=+%28+85+%2B+65+%29%2At+
+240+=+150t+
+t+=+8%2F5+
This is +5%2F5+ plus +3%2F5+=+.6+
which is 1 hour and 36 minutes
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Check:
+d%5B1%5D+=+85%2A%288%2F5%29+
+d%5B1%5D+=+17%2A8+
+d%5B1%5D+=+136+ mi
and
+d%5B2%5D+=+65%2A%288%2F5%29+
+d%5B2%5D+=+13%2A8+
+d%5B2%5D+=+104+ mi
+d%5B1%5D+%2B+d%5B2%5D+=+136+%2B+104+
+d%5B1%5D+%2B+d%5B2%5D+=+240+ mi
OK