<PRE><B>Question 776971</B>
a bus made a trip to las vegas and back. on the trip there it drove 60mph and on the return trip it went 64mph. how long did the return trip take if the trip there took 72 hours
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To Vegas DATA:
rate = 60 mph ; time = x hrs ; distance = 60x miles
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From Vegas DATA:
rate = 64 mp ; distance = 72-x hrs ; distance = 64(72-x) hrs
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Equation:::
distance = distance
60x = 64*72 - 64x
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124x = 4608
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x = 37.16 hrs 
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Retrun trip took 72-37.16 = 34.84 hrs
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Cheers,
Stan H.
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