document.write( "Question 669535: the hiking club hiked to a state park at 4mph. they got aride back to town in a truck that wnt 20mph. If the round trip took 18 houers, how tar was it from town to the park.
\n" ); document.write( "My question is how to write the equetions to solve this problem? \n" ); document.write( "

Algebra.Com's Answer #416497 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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the hiking club hiked to a state park at 4 mph.
\n" ); document.write( " they got a ride back to town in a truck that went 20 mph.
\n" ); document.write( " If the round trip took 18 hrs, how far was it from town to the park.
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\n" ); document.write( "Let d = distance to the park and distance back to town
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\n" ); document.write( "Write a time equation; time = dist/speed
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\n" ); document.write( "Walk time + ride time = 18 hrs
\n" ); document.write( " $\"d%2F4\"$ + $\"d%2F20\"$ = 18
\n" ); document.write( "multiply by 20, cancel the denominators and you have:
\n" ); document.write( "5d + d = 20(18)
\n" ); document.write( "6d = 360
\n" ); document.write( "d = 360/6
\n" ); document.write( "d = 60 mi
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\n" ); document.write( "See if that checks out, find the times
\n" ); document.write( "60/4 = 15 hrs
\n" ); document.write( "60/20 = 3 hrs
\n" ); document.write( "---------------
\n" ); document.write( "tot time 18 hrs \n" ); document.write( "

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