|
 
|
1#
發表於 2008-11-23 12:23 AM
| 顯示全部帖子
64seconds+ p: { x( c. t- k7 B: C
j+ h |( s7 `; D; B' ~
1 to 4 have 3floors = 48 sec
|; V9 D4 T( uavg. 48/3 = 16sec
. B: C' F( d: ?# @9 ^2 M k5 R5.39.217.76公仔箱論壇3 [6 j8 Z3 n' ]6 Q3 c" t
4 to 8 have 4floors = 16x4* M# i# a, f' L: D+ L
= 64secs |
|
