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

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

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Construction Planning and Management
At a work site, statistical quality control of concrete means

Reduction in costs for the removal of defects
Measurement of risks to eliminate failures
Reduction in wastage of inspection costs
Applying the theory' of probability to sample testing or inspection

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Construction Planning and Management
Free float is mainly used to

Establish priorities
Identify the activities which can be delayed without affecting the total float of preceding activity
Identify the activities which can be delayed without affecting the total float of either the preceding or succeeding activities
Identify the activities, which can be delayed without affecting the total float of succeeding activity

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