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)![]() ![]() ![]() You can put this solution on YOUR website! 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 \n" ); document.write( " |