financial formulas

[shank]

I need help with financial formulas.

SP = Sell Price
C = Cost
GP = Gross Profit
GPP = Gross Profit Percentage

Assuming....
SP = C / (1-GPP)

C = $1.08
GPP = 200%
SP = -$1.08 <-- can't be right

What am I doing wrong?

thanks

 

[JE McGimpsey]

GPP can't be > 100%.

If the entire sell price is profit (e.g., C = 0), then the GPP = 100%.

If by "GPP=200%" you mean that you want the percentage that makes

GP = 2 * C

true, then GPP = 2/3 or 66.66...%