document.write( "Question 1146349: Susan charges $80 plus $40 an hour to clean houses. If a client's total bill were $320, how many hours did Susan spend cleaning the client's house? \n" ); document.write( "
Algebra.Com's Answer #767619 by josmiceli(19441)\"\" \"About 
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Let \"+t+\" = number of hours
\n" ); document.write( "\"+320+=+80+%2B+40t+\"
\n" ); document.write( "\"+40t+=+240+\"
\n" ); document.write( "\"+t+=+6+\"
\n" ); document.write( "She spent 6 hrs cleaning
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