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)\"\" \"About 
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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
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