document.write( "Question 250998: While hiking the Peralta Trail to Wheeler’s Needle and back, Rick spent 60% of his time walking uphill to Wheeler’s Needle and 40% of his time returning by the same trail. If he averaged 2 miles per hour uphill, what was his average speed for the round-trip? \r
\n" );
document.write( "\n" );
document.write( "A. 2 1/3 mph B. 2.25 mph C. 2.4 mph D. 2.5 mph E. 2.6 mph
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #182776 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! rate * time=distance \n" ); document.write( ".6/.4=2/r \n" ); document.write( "r=1.33 for return trip \n" ); document.write( "(2+1.33)/2=average\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |