SOLUTION: The OfficeJet Printer can copy Maria's Dissertation in 8 Minutes. The LaserJet can copy the same document in 14 minutes. If the two printers work together,how long will they take t

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Question 202874: The OfficeJet Printer can copy Maria's Dissertation in 8 Minutes. The LaserJet can copy the same document in 14 minutes. If the two printers work together,how long will 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 8 Minutes. The LaserJet can copy the same document in 14 minutes. If the two printers work together,how long will they take to copy the dissertation.
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OJ Printer DATA:
time = 8 min/job ; rate = (1/8) job/min
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LJ Printer DATA:
time = 14 min/job ; rate = (1/14) min/job
------------------------------
Together DATA:
time = x min/job ; rate = (1/x) min/job
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Equation:
rate + rate = together rate
1/8 + 1/14 = 1/x
14x + 8x = 8*14
22x = 8*14
x = 5.09 minutes
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Cheers,
Stan H.
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