12 Jubail Corporation purchased a vibratory finishing machine for $20,000 in year 0. The useful life of the machine is 10 years, at the end of which, the machine is astuted to have a zero age The ma generates net annual revenues of $6.000 The annual operating and maintenance expenses are estimated to be $1.000 J&M's MARR is 12% how many years does take before this machine becam profitable? A 4 years