Construction Planning and Management
Crash project duration is obtained by summing the

Crash durations for all activities
Crash durations for all the activities along the critical path obtained by taking into account the normal duration for all the activities
Crash durations for all the activities along the critical path obtained by taking into account the crash duration for all the activities
Normal durations for all the activities

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Construction Planning and Management
Total float for any activity is defined as the difference between

Its latest start time and earliest finish time
Its latest start time and earliest start time
Its latest finish time and earliest start time for its successor activity
Its earliest finish time and earliest start time for its successor activity

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Construction Planning and Management
A contractor has two options;(l) : Invest his money in project A or (II) : Invest his money in project B. If he decides to invest in A, for every rupee invested, he is assured of doubling his money in ten years. If he decides to invest in B, he is assured of making his money 1.5 times in 5 years. If the contractor values his money at 10% interest rate, he

should invest in project A
should invest in project B
should invest in neither of the two projects
could invest in either of the two projects

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