SOLUTION: The OfficeJet Printer can copy Maria's dissertation in 22 minute. The LaserJet Printer can copy the same document in 16 minutes. If the two machines work together, how long would t

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Question 564509: The OfficeJet Printer can copy Maria's dissertation in 22 minute. The LaserJet Printer can copy the same document in 16 minutes. If the two machines work together, how long would they take to copy the dissertation?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The OfficeJet Printer can copy Maria's dissertation in 22 minute. The LaserJet Printer can copy the same document in 16 minutes. If the two machines work together, how long would they take to copy the dissertation?
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OfficeJet rate = 1/22 job/min
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LaserJet rate = 1/16 job/min
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Together rate = 1/x job/min
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Equation:
rate + rate = together rate
1/22 + 1/16 = 1/x
----
(16+22)/(22*16) = 1/x
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(22*16)/38 = x
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x = 9.2632
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Cheers,
Stan H.
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