document.write( "Question 1207766: A 20-pound bag of Economy brand cement mix contains 25% cement and 75% sand. How much pure cement must be added to produce a cement mix that is 40% cement?\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "I came up with this equation:\r
\n" ); document.write( "\n" ); document.write( "0.25x + 0.75x = 0.40(2x)\r
\n" ); document.write( "\n" ); document.write( "You say?
\n" ); document.write( "

Algebra.Com's Answer #845833 by ikleyn(52781)\"\" \"About 
You can put this solution on YOUR website!
.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Your setup equation is  FATALLY  wrong.  It is irrelevant to wording description.
\n" ); document.write( "One item has no any relation to the other.
\n" ); document.write( "There is NO any logical connections between them.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "This problem was solved at this forum many years ago  (perhaps,  15 years ago).\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "For solution,  see the link\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "https://www.algebra.com/algebra/homework/word/mixtures/Mixture_Word_Problems.faq.question.512728.html#google_vignette\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );