Will and frank can do a certain job together in 60 minutes. Will can do 3x as much of the job as frank can. in any given amount of time how many minutes would it take will to do the job alone..??

Answer 1

will's rate = job/x
Frank's rate = job/3x

combined rate = job/x + job/3x = 4job/3x

job ÷ (4job/3x) = 60
job (3x/(4job) = 60
3x/4 = 60
x = 80
Will could do it in 80 minutes alone, while Frank would take 240 minutes alone