document.write( "Question 316915: A train can complete a trip of 'd' miles in 'h' hours. Find the average speed in miles/hrs, if on the next day the train completes the trip 30 min faster than the previous day? \n" ); document.write( "
Algebra.Com's Answer #226874 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Total distance covered: \"d%2Bd=2d\"
\n" ); document.write( "Total time elapsed:\"h%2Bh-1%2F2\"
\n" ); document.write( "Average speed=Total Distance/Total Time
\n" ); document.write( "\"V=2d%2F%282h-1%2F2%29=4d%2F%284h-1%29\"
\n" ); document.write( "
\n" );