karmacrunch
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#1
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Hi!

I don't really know what to do when I see questions like part iii?

I guessed A and E but I don't really have a reason why other than they're critical activities. Am I supposed to look at float?

Does anyone have a thought process they can share?

Thanks.
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ghostwalker
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(Original post by karmacrunch)
Hi!

I don't really know what to do when I see questions like part iii?

I guessed A and E but I don't really have a reason why other than they're critical activities. Am I supposed to look at float?

Does anyone have a thought process they can share?

Thanks.
Critical activities would be a good starting point.

Once they are reduced, other activities which weren't critical, now are and we can look at reducing those. You might find a new diagram useful.
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karmacrunch
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(Original post by ghostwalker)
Critical activities would be a good starting point.

Once they are reduced, other activities which weren't critical, now are and we can look at reducing those. You might find a new diagram useful.
Okay, so if I reduce A and E by 2 days, they'll both take 3 days.

Then C and E would finish on day 6 but D would finish on day 7 so I can reduce D by one day. (:

(Original post by ghostwalker)
You might find a new diagram useful.
A new activity network?

So there's no set way of doing this kind of Q? Just look at the critical activities first?
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ghostwalker
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(Original post by karmacrunch)
Okay, so if I reduce A and E by 2 days, they'll both take 3 days.

Then C and E would finish on day 6 but D would finish on day 7 so I can reduce D by one day. (:
That would be my thinking.

A new activity network?
Just a suggestion, to see things more clearly. Probably not time in the exam for that though.

So there's no set way of doing this kind of Q? Just look at the critical activities first?
That was the set way.

You can only reduce the overall duration by reducing the time of critical activities.

If the activity has a non-zero float, reducing its duration will have no effect on the overall time to completion.

As some activites are reduced, then others which weren't critical, can become critical, and so become candidates for consideration.
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karmacrunch
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(Original post by ghostwalker)
That would be my thinking.

Just a suggestion, to see things more clearly. Probably not time in the exam for that though.

That was the set way.

You can only reduce the overall duration by reducing the time of critical activities.

If the activity has a non-zero float, reducing its duration will have no effect on the overall time to completion.

As some activites are reduced, then others which weren't critical, can become critical, and so become candidates for consideration.
Oh, yeah. :facepalm: This makes much more sense now!

Thank you so much.
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ChaoticButterfly
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(Original post by karmacrunch)
Does anyone have a thought process they can share?
**** decision maths.
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