I've read both ciaffones/rebuens PL/NL Holdem Poker, as well as Ciaffones Improve your poker, both very good books. However, I was greatly disappointed by this "Quizzie"-book by Reuben. I think there are quite a lot of inconsistancies, as well as a lot of of information lacking for a lot of the problems. He often forgets to mention previous plays as in your image, and more importantly, something as crucial to cash game decisions as stack sizes. He often simply just states the blinds and which players are involved, not mentioning neither opponents stack size and/or image, nor your own. A lot of advice are often contradictive in similar situations, and no, this has nothing to with the fact that nearly identical situations can be played vastly diffrent depending on just a tiny factor, since so many factors are missing in the layout of the problems that two situations doesn't only appear to be identical; they are, judging from all available information.