Consider the winter activity of skiing. assume that the rental cost of ski equipment is $109 and the lift ticket costs $79. if you go skiing, you would wear the ski jacket you purchased last year for $152. if you do not go skiing, you could either work at your part-time job, which would earn you $117, or study at the library, which you value at $24. suppose that you were planning to spend saturday working at your part-time job, but a friend asks you to go skiing. what is the opportunity cost of going skiing? enter a whole number and no dollar sign.