Once you have allocated Resources for the Activities the next step is to apply these on the same to determine Activity Durations. 

In the Bottom-Up process you add Activitiy durations in a Work Package to arrive at the duration for that work package & similarly for other work packages. Whats the catch here? 

You do not add durations algebraically.  You need to take Activity Dependencies into account, remember?

Dependencies we will look at in the next session 

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