document.write( "Question 1045790: Peter cycles at 4 mph uphill, and 12 mph downhill. He rides from his house at the bottom of a hill to his grandma’s house at the top of the hill, and back home. His average speed for the whole journey is: \n" ); document.write( "
Algebra.Com's Answer #661287 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Peter cycles at 4 mph uphill, and 12 mph downhill. He rides from his house at the bottom of a hill to his grandma’s house at the top of the hill, and back home. His average speed for the whole journey is: \n" ); document.write( "--------- \n" ); document.write( "Avg = 2*4*12/(4+12) = 96/16 \n" ); document.write( "Avg = 6 mi/hr \n" ); document.write( " |