12 times$ l5 f# f1 ?! I: U# S A9 s: `8 @2 A
, Q' _5 j$ ?& F% y H
each time 4 person but 1 need to back to pick up the other 3' d0 a% K! d! ^& m% f, {
return x 10 = 30 people
* }/ @' A( z' _1 time return
" f Q. O+ E% V' B* D- O. V2 person on last time
5 p) c) j2 Y1 Y公仔箱論壇total : 12 times |