document.write( "Question 859959: A grocer buys lettuce for $5.20 a crate. Of the lettuce he buys, 10% cannot be sold. If he charges 40 cents for each head he sells and makes a profit of 10 cents on each head he buys, how many heads of lettuce are in a crate? \n" ); document.write( "

Algebra.Com's Answer #518088 by josmiceli(19441) $\"\"$ $\"About$

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He makes a profit of $\"+10+\"$ cents on each head he buys.
\n" ); document.write( "So, he makes a profit of $\"+10+\"$ cents on each head in a crate
\n" ); document.write( "Let $\"+x+\"$ = the number of heads in a crate
\n" ); document.write( "10% cannot be sold, so he sells $\"+.9x+\"$ heads at $\"+40+\"$ cents each
\n" ); document.write( " $\"+.4%2A%28.9x%29+=+.36x+\"$ is what he sells the $\"+.9x+\"$ heads for
\n" ); document.write( "-----------------------
\n" ); document.write( "The grocer's profit is $\"+.1x+\"$ ( 10 cents on each head int he crate )
\n" ); document.write( " $\"+.36x+-+5.2+=+.1x+\"$
\n" ); document.write( " $\"+.26x+=+5.2+\"$
\n" ); document.write( " $\"+x+=+20+\"$
\n" ); document.write( "There are 20 heads in a crate
\n" ); document.write( "---------------------------
\n" ); document.write( "check:
\n" ); document.write( "10% can't be sold- that is $\"+.1%2A20+=+2+\"$ heads
\n" ); document.write( "He sells $\"+18+\"$ heads at 40 cents each
\n" ); document.write( " $\"+18%2A.4+=+7.2+\"$
\n" ); document.write( "----------------
\n" ); document.write( "His profit is $\"+.1%2A20+=+2+\"$ dollars
\n" ); document.write( " $\"+7.2+-+5.2+=+2+\"$
\n" ); document.write( " $\"+2+=+2+\"$
\n" ); document.write( "OK\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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