SOLUTION: A company has two large computers. The slower computer can send all the company's email in 55 minutes. The faster computer can complete the same job in
45 minutes. If both compu
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45 minutes. If both compu
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Question 1135879: A company has two large computers. The slower computer can send all the company's email in 55 minutes. The faster computer can complete the same job in
45 minutes. If both computers are working together, how long will it take them to do the job? Answer by Edwin McCravy(20060) (Show Source):
time rate time production
for in working in fraction
1 job jobs/min together of a job
--------------------------------------------------------
slower computer 55 1/55 x (1/55)x
faster computer 45 1/45 x (1/45)x
--------------------------------------------------------
total production = 1 job
(1/55)x + (1/45)x = 1
Multiply through by LCD = 495
9x + 11x = 495
20x = 495
x = 495/20
x = 99/4
x = 24.75 minutes
Edwin
