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Subhas Chandra Bose

The expected ...

Question

The expected time $(t_{e})$ of a PERT activity in terms of optimistic time $(t_{o}),$ pessimistic time $(t_{p})$ and most likely time $(t_{l})$ is given by

A

t_{e} = \frac{t_{o} + 4 t_{p} + t_{l}}{3}

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B

t_{e} = \frac{t_{o} + 4 t_{p} + t_{l}}{6}

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C

t_{e} = \frac{t_{o} + 4 t_{l} + t_{p}}{6}

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D

t_{e} = \frac{t_{o} + 4 t_{l} + t_{p}}{3}

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Solution

The correct option is C $t_{e} = \frac{t_{o} + 4 t_{l} + t_{p}}{6}$
The expected time $(t_{o})$ of PERT activity in terms of optimistic time $(t_{o})$ , pessimistic time $(t_{p})$ and most likely time $(t_{l})$ is given by,

$t_{o} = \frac{t_{o} + 4 t_{l} + t_{p}}{6}$

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Q. Consider the following PERT network:

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2 - 5	5	7	9
3 - 5	2	4	6
5 - 6	4	5	6
4 - 7	4	6	8
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2 - 5	5	7	9
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