算法比較多，這裏是簡單的：

house price: P

rent income in a year: L

cost (including management fee, property tax, but no morgage): C

return = (L - C)/P

所有跟帖： 

• 再加一點 -螺絲螺帽- ♀ (170 bytes) () 07/27/2012 postreply 18:15:03

• 再加一點--cost------- insurance -hc29- ♀ (0 bytes) () 07/28/2012 postreply 05:45:13

• 回複：算法比較多，這裏是簡單的： -蘭花地主- ♂ (86 bytes) () 07/27/2012 postreply 20:51:27