EconWeb - Production Possibilities Frontier    Consider the graph to the right. GPA is on the vertical axis and fun is on the horizontal axis. This particular graph is set up as if a 4.0 is the highest possible GPA that can be earned and 100 hours is the most amount of time that can be spent having fun each week.

   Suppose we are interested in a student who currently finds herself at a point like A, (A is just a label and has nothing to do with grades. At point A our student's grades are almost all Fs) with a GPA close to 0 (all Fs) and spending all her time having fun. What if she wants to improve her grades?...

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