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Construction Management - Engineering

Q1:

The three time estimates for the activities of the network shown in the given figure are shown above their arrows. The earliest expected time for the event 4, is

A 19

B 14

C 24

D None of these.

ANS:A - 19

1-2=>(3+(4*4)+5)/6 = 24/6 = 4.
2-3=>(5+(7*4)+9)/6 = 42/6 = 7.
3-4=>(6+(8*4)+10)/6 = 48/6 = 8.