document.write( "Question 260013: Jen runs from home to a park and back. She runs an average of 6 mph from home to the park and 4 mph from the park to home. If the round-trip takes 5 hours, what is the distance, in miles, between the park and Jen’s home?
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Algebra.Com's Answer #191517 by checkley77(12844)\"\" \"About 
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D=RT
\n" ); document.write( "D=6T FOR THE RUN TO THE PARK.
\n" ); document.write( "D=4(5-T) FOR THE RETURN RUN.
\n" ); document.write( "BECAUSE THE DISTANCES ARE THE SAME WE HAVE:
\n" ); document.write( "6T=4(5-T)
\n" ); document.write( "6T=20-4T
\n" ); document.write( "6T+4T=20
\n" ); document.write( "10T=20
\n" ); document.write( "T=20/10
\n" ); document.write( "T=2 HOURS FOR THE 6 MPH RUN.
\n" ); document.write( "D=6*2=12 MILES FROM HOME & THE PARK.
\n" ); document.write( "PROOF:
\n" ); document.write( "12=4(5-2)
\n" ); document.write( "12=4*3
\n" ); document.write( "12=12
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