document.write( "Question 323592: A company's has a new printer can print checks three times faster than its old printer. with both printers operating ,the checks can be printed in 6 minutes. how long would it take to print the checks with the new printer only ?'' \n" ); document.write( "
Algebra.Com's Answer #231563 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
In words:
\n" ); document.write( "(printing rate of old printer) + (printing rate of new printer) = (printing rate together)
\n" ); document.write( "And, making this more detailed:
\n" ); document.write( "(o.p. rate in checks/min) + (n.p. rate in checks/min) = (rate together in checks/min)
\n" ); document.write( "Let old printer's rate = \"r\" checks/min
\n" ); document.write( "given:
\n" ); document.write( "New printer's rate = \"3r\" checks/min
\n" ); document.write( "Printing rate together = \"1%2F6\" one check printing job/min
\n" ); document.write( "------------------------------
\n" ); document.write( "Note that I am calling all the checks printed = 1 printing job
\n" ); document.write( "\"3r+%2B+r+=+1%2F6\"
\n" ); document.write( "\"4r+=+1%2F6\"
\n" ); document.write( "\"r+=+1%2F24\"
\n" ); document.write( "So, the old printer's rate is 1 check printing job in 24 min
\n" ); document.write( "\"3r+=+3%2F24\"
\n" ); document.write( "\"3r+=+1%2F8\"
\n" ); document.write( "So, the new printer's rate is 1 check printing job in 8 min
\n" ); document.write( "check answer:
\n" ); document.write( "\"3%2F24+%2B+1%2F24+=+1%2F6\"
\n" ); document.write( "\"4%2F24+=+4%2F24\"
\n" ); document.write( "OK
\n" ); document.write( "
\n" );