SOLUTION: Alex and Jenny are on a road trip and they are at a rest stop. If Jenny leaves first driving at 50mph, and Alex leaves 30 minutes later driving at 65mph, how long will it take for

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Question 1098006: Alex and Jenny are on a road trip and they are at a rest stop. If Jenny leaves first driving at 50mph, and Alex leaves 30 minutes later driving at 65mph, how long will it take for Alex to catch up to Jenny?
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
t, time for Alex to catchup in hours

65t=50%28t%2B1%2F2%29
-
65t=50t%2B25
13t=10t%2B5
3t=5
t=5%2F3
t=1%262%2F3-------
1 hour 40 minutes