document.write( "Question 388382: A discount store sold plastic cups for $3.25 each and ceramic cups for $4.50 each. If 500 cups were sold for a total of $2090, how many cups of each type were sold?\r
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Algebra.Com's Answer #274680 by mananth(16946)\"\" \"About 
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A discount store sold plastic cups for $3.25 each and ceramic cups for $4.50 each. If 500 cups were sold for a total of $2090, how many cups of each type were sold?\r
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\n" ); document.write( "plastic cups for $3.25 each ----------p numbers
\n" ); document.write( "ceramic cups for $4.50 each.----------c numbers
\n" ); document.write( "500 cups were sold
\n" ); document.write( "for a total of $2090
\n" ); document.write( "..
\n" ); document.write( "p+c=500......................(1)
\n" ); document.write( "3.25p+4.5c=2090...............(2)
\n" ); document.write( "..
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\n" ); document.write( "multiply (1) by -3.25
\n" ); document.write( "we get
\n" ); document.write( "-3.25p-3.25c=-1625
\n" ); document.write( "add to (2)
\n" ); document.write( "..
\n" ); document.write( "3.25p-3.25p+4.5c-3.25c=2090-1625
\n" ); document.write( "1.25c=465
\n" ); document.write( "/1.25
\n" ); document.write( "c=372.
\n" ); document.write( "ceramic cups 372
\n" ); document.write( "Balance 128 plastic cups
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\n" ); document.write( "m.ananth@hotmail.ca \n" ); document.write( "
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