SOLUTION: 3A train leaves Perryville at 6:00 AM and travels east at a rate of 64 mph, as it reaches Granite City a westbound train departs from Granite City for Perryville, traveling at a ra
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Question 13307: 3A train leaves Perryville at 6:00 AM and travels east at a rate of 64 mph, as it reaches Granite City a westbound train departs from Granite City for Perryville, traveling at a rate of 48 mph. How far is it from Perryville to Granite City by train if the westbound train gets to Perryville at 9:30 AM? Answer by kusha(21) (Show Source):
You can put this solution on YOUR website! let the distance between perry ville & granite city be x miles.
THe time for train a to reach Granite city from perryvilleis x/64 hrs
and time for train b to reach perryville from granite is x/48 hrs
total time = x/64 + x/48 = 7/2 hrs (or 3.5 hrs 6 am to 9:30 am)
solving for x we get x = 96 miles
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