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

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Construction Planning and Management
In time-cost optimization of a project, crashing is done.

Only on activities lying on the original critical path and having flatter cost slopes
On original critical activities and those that become critical at any stage of crashing in the order of ascending cost slope
On all the activities lying on the critical path
On all the activities

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