document.write( "Question 241668: The officejet printer can copy lisa's dissertation in 10 min. the laserjet can copy the same document in 16 min. If the two machines wor together, how long would they take to copy the dissertation? \n" ); document.write( "

Algebra.Com's Answer #176996 by vleith(2983) $\"\"$ $\"About$

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One copier can do 1/10 of the job a minute. The other one can do 1/16 in a minute\r
\n" ); document.write( "\n" ); document.write( "Together they can do
\n" ); document.write( " $\"1%2F10+%2B+1%2F16%7D%7D%0D%0A%7B%7B%7B16%2F160+%2B+10%2F160\"$
\n" ); document.write( " $\"26%2F160\"$
\n" ); document.write( " $\"13%2F80\"$ of the job per minute\r
\n" ); document.write( "\n" ); document.write( "How long to do the whole job?
\n" ); document.write( " $\"X%2A13%2F80+=+1\"$
\n" ); document.write( " $\"X+=+80%2F13\"$
\n" ); document.write( " $\"X+=+6.15\"$ minutes\r
\n" ); document.write( "\n" ); document.write( "So the two together can do the job in about 6 minutes an 1o seconds \n" ); document.write( "

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