<PRE><B>Question 251938</B>
A group hiked to a state park at 4mph. They took a truck back to town at 20mph. The round trip took 18 hours. How far is it from town to the park?
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Hike DATA:
rate = 4 mph ; distance = x miles ; time = x/4 hrs.
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Truck DATA:
rate = 20 mph ; distance = x miles ; time = x/20 hrs.
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Equation:
time + time = 18 hrs
x/4 + x/20 = 18
Multiply thru by 20 to get:
5x + x = 20*18
6x = 20*18
x = 60 miles (distance from town to the park)
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Cheers,
Stan H.</PRE>