(Scheme 1) From his present position to the mountain, he will encounter 8 1, 82, ...,12,1,..., 49, ***8 1 in turn, so it is 9 * 80.

(Option 2) It can be seen that the cable car No.9.5 is just at the end, and he needs to take 40.5 "cable car time". After 9 seconds of relative movement, it takes 18 seconds to walk a "cable car distance" alone. So 40.5* 18=729.

(2)

(Solution 1) From the top of the mountain to the bottom of the mountain, there will be a 1 12 cable car (he should also record it as a time), so1200/(112 * 9) =/kloc.

(Solution 2)1200/((112) * 2 * 9) =1.19.