Answer: Hello there!
in this problem, we have two things to choose, the chair lift and the ski trail, with 3 options for the chair lifts, and 6 options for the ski trails.
The total number of combinations is obtained by multiplying the number of options for each one of the things that we have to choose; in this case, it is 6*3 = 18 total combinations.
Answer: From my knowledge it was Non proportional but get some other answers to be sure!