document.write( "Question 711756: If you drove for 30 minutes at 60 mph and 10 minutes at 38 mph. What was your average speed for the trip? \n" ); document.write( "
Algebra.Com's Answer #437606 by checkley79(3341)\"\" \"About 
You can put this solution on YOUR website!
D=RT
\n" ); document.write( "D=60*.5
\n" ); document.write( "D=38*.167
\n" ); document.write( "D=60*5+38*.167
\n" ); document.write( "D=30+6.346
\n" ); document.write( "D=36.346 MILES.
\n" ); document.write( "36.346=R(.5+.167)
\n" ); document.write( "36.346=.667R
\n" ); document.write( "R=36.346/.667
\n" ); document.write( "R=54.34 MPH. IS THE AVERAGE SPEED.
\n" ); document.write( "
\n" ); document.write( "
\n" );