document.write( "Question 1055490: A certain screw machine can produce a box of parts in 3.3h . A new machine is to be ordered having a speed such that both machines working together would produce a box of parts in 1.4h . How long would it take the new machine alone to produce a box of parts? \n" ); document.write( "
Algebra.Com's Answer #670861 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Rate*Time=Output
\n" ); document.write( "For the first machine,
\n" ); document.write( "\"R%5B1%5D%2A3.3=1\"
\n" ); document.write( "\"R%5B1%5D=1%2F3.3\"
\n" ); document.write( "For the machines together,
\n" ); document.write( "\"%28R%5B1%5D%2BR%5B2%5D%29%2A1.4=1\"
\n" ); document.write( "Substituting,
\n" ); document.write( "\"%281%2F3.3%2BR%5B2%5D%29%2A1.4=1\"
\n" ); document.write( "\"1%2F3.3%2BR%5B2%5D=1%2F1.4\"
\n" ); document.write( "\"R%5B2%5D=1%2F1.4-1%2F3.3\"
\n" ); document.write( "\"R%5B2%5D=10%2F14-10%2F33\"
\n" ); document.write( "\"R%5B2%5D=%2810%2F14%29%2833%2F33%29-%2810%2F33%29%2814%2F14%29\"
\n" ); document.write( "\"R%5B2%5D=%28330-140%29%2F%2833%2A14%29\"
\n" ); document.write( "\"R%5B2%5D=190%2F462\"
\n" ); document.write( "\"R%5B2%5D=95%2F231\"
\n" ); document.write( "So then,
\n" ); document.write( "\"R%5B2%5D%2At=1\"
\n" ); document.write( "\"t=1%2FR%5B2%5D\"
\n" ); document.write( "\"t=231%2F95\"\"hr\"\r
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