Quiz II took me about 40 min.  I think it *is* a lot more reasonable
in terms of length and difficulty than Quiz I.  I don't think there is
any way we should expect them to be done in one hour though.

I think problem 2 is going to be the most time-consuming, and it is
kind of long.  But they do get the most points for it.

I actually really liked the rest of the problems. 

I also just looked at the solutions and have a couple comments: 
1)
problem 5 (in the solutions. the video game problem): in part (b) P_n,
Q_n, and M_n are all used at the same time to mean the same thing.
Should probably be replaced with one variable.
same goes for part (d)

2) problem 4 (solutions. the graph problem)
part (f) should probably have a more detailed explanation eventually... 

-Yana