document.write( "Question 372734: It takes a computer 8 days to print all of the personalized letters. A new computer is purchased that can do the same job in 5 days. How long would it take to do the job with both computers working on it? \n" ); document.write( "
Algebra.Com's Answer #265480 by checkley79(3341)\"\" \"About 
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1/8+1/5=1/X
\n" ); document.write( "(5+8)/5*8=1/X
\n" ); document.write( "13/40=1/X
\n" ); document.write( "13X=40
\n" ); document.write( "X=40/13
\n" ); document.write( "X=3.08 DAYS WORKING TOGETHER.
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