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? Do not do any rounding.
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
