Shown below is data from an experiment assessing the activity of an enzyme following Michaelis-Menten kinetics.

What would the V_max (in units of micromolar/min) of this reaction be if one third the amount of enzyme had been used for the experiment?

(Note: do not enter any units. You just need to enter in the numerical value, e.g. 15. Obviously the answer isn't 15 or I wouldn't have written that. I guess I could be weird and try to throw you by writing that and having the answer as actually that. But no, I wouldn't do that to you. Plus, you know the answer isn't 15. You've already worked it out and stopped reading this nonsense I'm still typing...)