Calculate Bid Multiplier From CPC

[Matthew Milnes]

Hi,

I am looking to reverse calculate a bid modifier from a CPC. 

So say the base CPC is 0.10$ and I want to set a CPC of 0.125$ - how do I calculate the bid modifier to set to achieve this 0.125$ bid off of the 0.10$ base?

Thanks

Matt

[Matthew Milnes]

I've worked this out actually...

C1 = CPC,
C2 = Adjusted CPC,
CA = CPC Adjustment,

then

CA = (C2 - C1) / C1