Chapter 16, Problem 82QAP

Carbon monoxide poisoning results when carbon monoxide replaces oxygen bound to hemoglobin. The oxygenated form of hemoglobin, $\text{Hb}\cdot {\text{O}}_2$ carries O₂ to the lungs.
$\text{Hb}\cdot {\text{O}}_2\left(aq\right)+\text{CO}\left(g\right)\rightleftharpoons \text{Hb}\cdot \text{CO}\left(aq\right)+{\text{O}}_2\left(g\right)$
At 98.6°F (37°C), ΔG° for the reaction is about -14 kJ. What is the ratio of $\left[\text{Hb}\cdot {\text{O}}_2\right]$ to $\left[\text{Hb}\cdot \text{CO}\right]$ when the pressure of CO is the same as that of O₂?