document.write( "Question 805968: Kim jogged up a hill at 4 mph and then jogged back down at 8 mph. How many miles did she travel in all, if her total jogging time was 4 hour 30 min? \n" ); document.write( "

Algebra.Com's Answer #485602 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

You can put this solution on YOUR website!
Kim jogged up a hill at 4 mph and then jogged back down at 8 mph.
\n" ); document.write( " How many miles did she travel in all, if her total jogging time was 4 hour 30 min?
\n" ); document.write( ":
\n" ); document.write( "Let d = the one-way distance
\n" ); document.write( ":
\n" ); document.write( "Write a time equation; time = dist/speed
\n" ); document.write( "Time up + time down = 4.5 hrs
\n" ); document.write( " $\"d%2F4\"$ + $\"d%2F8\"$ = 4.5
\n" ); document.write( "Mult by 8, results:
\n" ); document.write( "2d + d = 8(4.5)
\n" ); document.write( "3d = 36
\n" ); document.write( "d = 36/3
\n" ); document.write( "d = 12 mi
\n" ); document.write( "then
\n" ); document.write( "2(12) = 24 mi traveled in all \n" ); document.write( "

\n" );