document.write( "Question 296013: A printing press produces 4,200 posters per hour. at this rate,in how many minutes can the printing press produces 840 posters \r
\n" ); document.write( "\n" ); document.write( "(A) 0.2 (B) 1.5 (C) 5 (D) 12 (E) 70\r
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Algebra.Com's Answer #213360 by unlockmath(1688)\"\" \"About 
You can put this solution on YOUR website!
Hello,
\n" ); document.write( "WE can set up a proportion as follows:
\n" ); document.write( "4200/60=840/x (Hint: convert hour to minutes)
\n" ); document.write( "Cross multiply to get:
\n" ); document.write( "4200x=50400 Divide both sides by 4200 to get:
\n" ); document.write( "x=12 minutes
\n" ); document.write( "Make sense?
\n" ); document.write( "There's a book I wrote that explains the basics at:
\n" ); document.write( "www.math-unlock.com
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