Question 22167
If the Dell computer takes 4 hrs to crack the password file, then it can crack 1/4 of the file in 1 hour.
If the Gateway computer takes 2(4) = 8 hrs to crack the same password file, then it can crack 1/8 of the file in 1 hour.
Working together, the two computers can crack (1/4 + 1/8 = 3/8) of the file in 1 hour.
Therefore, it would take them 8/3 hours, working together to crack the entire password file.
8/3 hours = 2 hours 40 minutes.