SOLUTION: One printing press can produce a newspaper in six hours running alone. . A second press can produce the paper and nine hours running alone a third press can produce the paper in ni

Question 1024963: One printing press can produce a newspaper in six hours running alone. . A second press can produce the paper and nine hours running alone a third press can produce the paper in nine hours running alone. A third press could produce the paper in 12 hours working alone. A late breaking headline cause the newspaper to change the paper later than usual. If all three presses are running , How long will it take to produce the newspaper
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Add the different rates of printing
to get their rate printing together.
Let = time in hours to
produce paper

Multiply both sides by

Convert the fraction to minutes

min
Convert the fraction to seconds
sec
--------------------------
Working together, the presses take
2 hrs 16 min 40 sec
--------------------
check:

OK
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