What is the difference between these two constructions:
a) I've done five days' worth of work.
b) I've done five days' work.
Example (a): I've done five days' worth of work in only two days!
Example (b): Great! Thanks to you, my five days' work goes down the drain!
Do they mean the following:
a) I have done as much work as I normally do within five days' time.
b) The amount of work that I have done within five days.