ARE demo exam : Planning project hours
Hi! This question is from Case Study #2 in the new ARE demo exam. Can someone please help me understand how to arrive the right answer? Thank you so much!
The Architect's Fee Budget is being prepared when construction documents are 80% complete. The architect needs to manage and maintain the remaining allotted hours.
At the current pace of work, how many project hours will remain after completion of construction documents
Answer: 420 hours

Since you need to figure out remaining hours after CDs are complete, the first thing you need to figure out is how many hours are estimated to be used to complete CDs. They’ve already used 800 hours and they’re 80% done. Therefore, if they continue at their current place (800/0.80=1000) then they’ll use 200 more hours to finish CDS (1000800).
Then you add that to total hours spent (200+1760=1960) and subtract that from total budgeted hours (23801960=420).
Hope this helps.

So the 80% that you see in my equation comes from this statement “ when construction documents are 80% complete.”. You wouldn’t use the %over/under equation. That number simply states that you’re 4% over your allotted hours at this given moment (80% done with CDs but you’ve used 84% of the hours). After finishing at their current pace they’ll be over 4%. I’m sure there is probably a complicated way to use that number to figure out the answer but I suggest going the easier route. They’ve finished 80% of CDs in 800 hours so 100% CDs would be 1000 hours. Hope that makes sense.
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