百分率其實係點計.....?

其實好easy~
百分率可分為佔有率及折扣...
佔有率:
佔有數量/總數x100%
如:
小明有5balls,總共有50balls,小明有的佔總數多少persent:
5/50x100％
=10％
Very easy,right?
折扣:
10％ off=1-10％
=90％=九折
---@@@~~~Do u understand...Or are u asking this question..

我唔知....sorry
我都唔明..

x100%