document.write( "Question 1055299: Please help me.
\n" );
document.write( "Jenny is cycling up a hill at a constant speed of 15 km/h and returns down the hill at a constant speed of 35 km/h. Calculate the average speed of her whole trip. \n" );
document.write( "
Algebra.Com's Answer #670531 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Jenny is cycling up a hill at a constant speed of 15 km/h and returns down the hill at a constant speed of 35 km/h. Calculate the average speed of her whole trip. \n" ); document.write( "------------------ \n" ); document.write( "Avg speed of a round trip is similar to parallel resistors and parallel flow or work. \n" ); document.write( "--- \n" ); document.write( "Avg = 2*15*35/(15+35) \n" ); document.write( "= 21 km/hr \n" ); document.write( " \n" ); document.write( " |