Math Question From "Common Core"

The problem, which to me is incomprehensible, comes from a Houghton Mifflin Assessment Guide.  Therefore, we must be teaching our children to make up answers when there is not enough data to arrive at a logical solution.  However, if our children come up with a process in arriving at a solution to any incomprehensible question, I guess it would be counted as correct.  This math question appears among a larger set of basically similar math problems here. The above problem involving Juanita appears on page AG102.

U.S. Secretary of Education, Arne Duncan, has promised to improve education quality by pushing for the implementation of the Common Core State Standards Initiative with the likes of the above math question.  Does any of this sound familiar to the likes of the "Affordable Health Care Act," or better known as Obamacare?  It simply tells me that the federal government is not very good at doing anything.