A:5天
" s- V- p! ]" L/ `" AB:4天) \9 t" N- y N$ L& T2 _$ k T
(5+4)/3=3tvb now,tvbnow,bttvb; B8 X7 B8 ^& T, Z* D; h) x, K6 H( F
而9元是C自己那块地的,
^0 I. ]' O7 D* E g& ^A是多干2天,tvb now,tvbnow,bttvb# B4 w/ h6 p) `
B是多干1天,% U: I! @( C1 s% |# H. R+ E9 |
A是6元,B是3元!!! |