document.write( "Question 117505: A farmer drives to town at 40km/h, spends 1.5 hours in town and returns home travelling at 30km/h. If he has been away from home a total of 5 hours, how far is hes farm from town? \n" ); document.write( "
Algebra.Com's Answer #85510 by checkley71(8403) ![]() You can put this solution on YOUR website! he only spent (5-1.5=3.5) hours driving. \n" ); document.write( "therefore we have the following equation. \n" ); document.write( "40t=30(3.5-t) \n" ); document.write( "40t=122.5-30t \n" ); document.write( "40t+30t=105 \n" ); document.write( "70t=105 \n" ); document.write( "t=105/70 \n" ); document.write( "t=1.5 hours or 1 hour 30 minutes for the trip to town. \n" ); document.write( "3.5-1.5=2 hours for the return trip. \n" ); document.write( "distance to town is: \n" ); document.write( "40*1.5=60 miles. \n" ); document.write( "30*2=60 miles.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |