Talk:Profitability/@comment-4192477-20110723212956/@comment-4045164-20110726115841

I think I found the error in the formula of Adi. His formula is: ((1-p)*income - p*repair) / ((1-p)*IncHours + p*RepHours)

but it should be:

(1*income - p*repair) / (1*IncHours + p*RepHours)

You always have income, and sometimes a repair. So the chance of income at a collection is 100%. In the example of 14 income, 1 rep (p = 0,0714285), we get 414, which is the correct value.

So if we all agree on this formula and the right value of p ( 0,07236 ?), we can recalculate the profits.