<PRE><B>Question 675517</B>
A bus took a 330 mile trip in 7 hours. The speed was 54 mph for the first part of the trip, and 30 mph for the return trip. How many hours were traveled at each speed? 
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1st Part DATA:
rate = 54 mph ; time = x hrs ; distance = 54x miles
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2nd Part DATA:
rate = 30 mph ; time = 7-x hrs ; distance = 30(7-x) miles
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Equation:
distance + distance = 330 miles
54x + 210 - 30x = 330
24x = 120
x = 5 hrs (time for 1st part)
7-x = 2 hrs (time for 2nd part)
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Cheers,
Stan H.
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