document.write( "Question 812206: Problem: In a group of 60 workers the average salary is $80 a day per worker. If some of the workers earn $75 a day and all the rest earn $100 a day, how many workers earn $75 a day?\r
\n" ); document.write( "\n" ); document.write( "Note: I have no idea how to start off! Please help me. Thank you. \n" ); document.write( "
Algebra.Com's Answer #489060 by ankor@dixie-net.com(22740)\"\" \"About 
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In a group of 60 workers the average salary is $80 a day per worker.
\n" ); document.write( " If some of the workers earn $75 a day and all the rest earn $100 a day,
\n" ); document.write( " how many workers earn $75 a day?
\n" ); document.write( ":
\n" ); document.write( "Let x = no. of $75 per days workers
\n" ); document.write( "Since there are a total of 60 workers, we know that:
\n" ); document.write( "(60-x) = no. of $100 per day workers
\n" ); document.write( ":
\n" ); document.write( "\"%28%2875x+%2B+100%2860-x%29%29%29%2F60\" = 80
\n" ); document.write( "multiply both sides by 60
\n" ); document.write( "75x + 6000 - 100x = 4800
\n" ); document.write( "75x - 100x = 4800 - 6000
\n" ); document.write( "-25x = -1200
\n" ); document.write( "x = -1200/-25
\n" ); document.write( "x = 48 workers earn $75 a day \n" ); document.write( "
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