<PRE><B>Question 1026957</B>
Two buses leave Chicago at the same time traveling in opposite directions. One bus travels at 54 mph and the other at 63 mph. How soon will they be 234 miles apart? 
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Combined separating rates = 54+63 = 117 mph
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time = distance/rate
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time = 234/117 = 2 hrs
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Cheers,
Stan H.</PRE>