Reduce cost - how to calculate ?

Wizard
Hi
I would like how to calcuulate reduce cost correct?
Meteor cost 40 AP
I have reduce:
- 50% form http://us.battle.net/d3/en/item/the-grand-vizier
- 30% from http://us.battle.net/d3/en/item/cindercoat
- 23% from paragon + other items
What is cost fo meteor:
1. 40-(50%*40+30%*40+23%*40)=10,78
2. 40*50%30%*23%=1,38
3. 40*50%=20, 40*30%=12, 40*23%=9,2 40-20-12-9,2=-1,2
4. other?
Diminishing returns.

Skill cost * (1 - RCR) * (1 - RCR) * (1 - RCR) * ...
07/09/2015 07:10 AMPosted by Jaetch
Diminishing returns.

Them's fightin' words.

Skill cost - (1 - RCR) * (1 - RCR) * (1 - RCR) * ...

So close.

Skill cost * (1 - RCR) * (1 - RCR) * (1 - RCR) * ...
Whups. Typo.

Must have been thinking CDR.
so
07/09/2015 07:01 AMPosted by czarofniq
1. 40-(50%*40+30%*40+23%*40)=10,78

its correct
but im using http://us.battle.net/d3/en/class/wizard/active/storm-armor with Power of the Storm
so when 3AP is reducin on begining on after reduce
40-(50%*40+30%*40+23%*40)=10,78-3=7,78
40-3-(50%*40+30%*40+23%*40)=9,97
07/09/2015 07:24 AMPosted by czarofniq
so
07/09/2015 07:01 AMPosted by czarofniq
1. 40-(50%*40+30%*40+23%*40)=10,78

its correct

Yes, you just wrote it the long way.

Power of the storm
...
40-3-(50%*40+30%*40+23%*40)=9,97

This one.
ok thx i will test it on PTR
07/09/2015 07:24 AMPosted by czarofniq
40-3-(50%*40+30%*40+23%*40)=9,97

Close.

It's not 23%, RCR on gear isn't added into a single RCR stat. Each RCR source should be treated the same way as Grand Vizier and Cindercoat.
07/09/2015 08:47 AMPosted by Tarken
It's not 23%, RCR on gear isn't added into a single RCR stat. Each RCR source should be treated the same way as Grand Vizier and Cindercoat.

I suppose that depends where he got that 23% number. I assumed he got it from his char sheet details page, in which case it is absolutely correct.

Incidentally 23% is what you would get with 10% paragon, and an 8% and a 7% roll on gear, so it seems a likely sort of number.
07/09/2015 07:24 AMPosted by czarofniq
40-3-(50%*40+30%*40+23%*40)=9,97

3 AP cost reduction from armor applies after all % rcr
as 9 AP cost reduction from diamond skin too.
07/09/2015 01:45 PMPosted by WizarD
07/09/2015 07:24 AMPosted by czarofniq
40-3-(50%*40+30%*40+23%*40)=9,97

3 AP cost reduction from armor applies after all % rcr
as 9 AP cost reduction from diamond skin too.

Not the last time I tested it. Heading out now but I'll test on live to double check tonight or tomorrow.
07/09/2015 01:45 PMPosted by WizarD
07/09/2015 07:24 AMPosted by czarofniq
40-3-(50%*40+30%*40+23%*40)=9,97

3 AP cost reduction from armor applies after all % rcr
as 9 AP cost reduction from diamond skin too.

What?

No. 100% wrong.

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