document.write( "Question 821494: A plane travels 84 miles in 20 minutes. What is the average speed of the plane? \n" ); document.write( "
| Algebra.Com's Answer #494152 by Alan3354(69443)     You can put this solution on YOUR website! A plane travels 84 miles in 20 minutes. What is the average speed of the plane? \n" ); document.write( "---------- \n" ); document.write( "d = r*t \n" ); document.write( "r = d/t \n" ); document.write( " |