1. The problem statement, all variables and given/known data Calculate fractional saturation (YO2) for hemoglobin at venous O2 pressure (30 torr). Assume that p50 for hemoglobin is 26 torr, Hill constant is 3. 2. Relevant equations YO2/1-YO2=(pO2/p50)^n 3. The attempt at a solution (30/26)^3=1.54=(YO2/1-YO2)= 1.54 - 1.54YO2= YO2 This is pathetic. I am so mathematically retarded it hurts. How to solve for YO2......I can't seem to get it alone....why do they always play hard to get...grrr. Thanks for any help.