If to, is the optimistic time, tp is the pessimistic time and tm is the most probable time, then the expected time of occurrence of an activity is
At = (to + 2tm +tp) /4
Bt = (to + tm +tp) /3
Ct = (to + 4tm +tp) /6
Dt = (to + 2tm + 3tp) /6
At = (to + 2tm +tp) /4
Bt = (to + tm +tp) /3
Ct = (to + 4tm +tp) /6
Dt = (to + 2tm + 3tp) /6
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