Question 729529
    Working together, it takes two computers 15 minutes to send out a company’s email. If it takes the slower computer 60 minutes to do the job on its own, how long will it take the faster computer to do the job on its own?
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Let x = time (minutes) it takes faster computer to do job alone
then
15(1/x + 1/60) = 1
multiplying both sides by 60x:
15(60 + x) = 60x
900 + 15x = 60x
900 = 45x
20 minutes = x