document.write( "Question 920818: An ice cream truck vendor sold 8 gallons of ice cream a day during the summer of 2008. In the summer of 2009 he only sold 7 gallons a day. What percent did his sales decrease? \n" ); document.write( "

Algebra.Com's Answer #558587 by josmiceli(19441) $\"\"$ $\"About$

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You don't know the cost of a gallon of ice cream
\n" ); document.write( "You can make uyp any cost like $1 / gal
\n" ); document.write( " $\"+8%2A1+=+8+\"$ dollars for 2008
\n" ); document.write( " $\"+7%2A1+=+7+\"$ dollars for 2009
\n" ); document.write( "The AMOUNT of the decrease in sales is:
\n" ); document.write( " $\"+8+-+7+=+1+\"$ dollar
\n" ); document.write( "The FRACTION of the decrease in sales is:
\n" ); document.write( " $\"+1%2F8+\"$
\n" ); document.write( "The PER CENT of the decrease in sales is:
\n" ); document.write( " $\"+%28+1%2F8+%29%2A100+=+12.5+\"$ % \n" ); document.write( "

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