Question 153070: It takes a computer 8 days to print all of the letters for a sweepstakes. A new computer is purchased that can do the same job in 5 days. How long would it take both computers working on it.: It takes a computer 8 days to print all of the letters for a sweepstakes. A new computer is purchased that can do the same job in 5 days. How long would it take both computers working on it. Answer by checkley77(3408) (Show Source):