Hey.

I'm really struggling with this one. In regards to which steps I've taken to solve it on my own, I got nothing but some pathetic attempts to isolate [ S] or play around with the formula. I'm spectacularly bad at this type of chemistry. I've read up on it but I still don't get it.

I'll try to translate it to the best of my ability.

The link between the substrate concentration [ S] and the initial velocity V_{0} is given by the following equation:

V_{0} = V_{max}*[ S]/K_{m}+[ S]

Indicate the amount of [ S] (in relation to K_{m}) in which V_{0} = 66,67% of the maximal velocity.

Thank you