document.write( "Question 902774: A trucker drove for 4 hours before he encountered icy road conditions. he reduced his speed by 20mph and continued driving for 3 hours. find his average speed during the first part of the trip if the entire trip was 235 miles. \n" ); document.write( "
Algebra.Com's Answer #550913 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! 4x+3(x-20)=235 \n" ); document.write( "4x+3x-60=235 \n" ); document.write( "7x=295 \n" ); document.write( "x=42.14 \n" ); document.write( "x-20=22.14\r \n" ); document.write( "\n" ); document.write( "This below is all you need to solve the problem\r \n" ); document.write( "\n" ); document.write( "235/7=33.6 mph average \n" ); document.write( " |