SOLUTION: Working together it takes two computers 12 minutes to send out a company's email. If it takes the slower computer 30 minutes to do this job on its own, how long will it take the fa
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Question 605223: Working together it takes two computers 12 minutes to send out a company's email. If it takes the slower computer 30 minutes to do this job on its own, how long will it take the faster computer to do this job on its own?
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Working together it takes two computers 12 minutes to send out a company's email. If it takes the slower computer 30 minutes to do this job on its own, how long will it take the faster computer to do this job on its own?
.
Let x = time (minutes) it takes for the faster computer to do the job alone
then
12(1/30 + 1/x) = 1
multiplying both sides by 30x:
12(x + 30) = 30x
12x + 360 = 30x
360 = 18x
20 minutes = x
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