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TOPIC: PM Formulas

PM Formulas 7 months 2 weeks ago #7295

  • Damien
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Hi
I purchased the 105 Formula Questions.
I'm looking to clarify the answer to question No.73. The answer given is A) 486,300. When I calculate using the correct formulas I get an answer of CPI = 240,000 / 253,700 = 0.9459. Is this ratio that added to the nearest decimal point, i.e. 0.95 ??
Using the answers ratio of 0.946 EAC = 700,000 / 0.946 = 739,957.716
• ETC = EAC – AC = 739,958 – 253,700 = 486,258
If you round off 0.946 to 0.95 you get EAC = 700,000 / 0.95 = 736,842,10
• ETC = EAC – AC = 736,842 – 253,700 = 483,142

Regards
Damien

PM Formulas 7 months 2 weeks ago #7297

  • Yasir Mehmood
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Hi Damien,

I didn't have the question so I took the long route but basically if you use CPI with more decimal places the answer works out. As you noticed rounding the CPI up even one decimal place makes a fairly large difference in the final answer.

You mentioned CPI = 240,000 / 253.700 so that tells me the question gives you the EV as 240,000 and AC as 253,700
You mentioned EAC = 700,000 / CPI which tells me that the question gives you BAC as 700,000
(I now know I didn't need to do that :P )

CPI = 240,000 / 253,700 = 0.945945945
EAC = BAC / CPI => 700,000 / 0.945945945 => 740,000.00074
ETC = EAC - AC => 740,000.00074 - 253,700 => 486,300.00074 => 486,300
Yasir Mehmood, MBA, PMP, PMI-ACP, CSM, CSP, CLP (LeSS), CSPO
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PM Formulas 7 months 2 weeks ago #7304

  • Aishah Ismail
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pls advice where you gotten the 105 formula qns?
I would like to practice. kindly email me This email address is being protected from spambots. You need JavaScript enabled to view it.

PM Formulas 7 months 2 weeks ago #7307

  • Yasir Mehmood
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Hi Aishah,

You can purchase the formulas and the 105 sample questions here.
https://www.project-management-prepcast.com/pmp-exam/the-pm-formulas
Yasir Mehmood, MBA, PMP, PMI-ACP, CSM, CSP, CLP (LeSS), CSPO
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