題目誤導人~
7 D( G3 O: [. X' J1 E7 Ktvb now,tvbnow,bttvbowner 100; `: x3 x/ B# a ^% ~0 h( n
owner's son 20
5 `+ b- n& G- g' X# C* X9 x* oeach pay 40
" s" G- f! J( Z$ @; \1 Ntvb now,tvbnow,bttvb40*3 = 120! s8 Y6 V2 N3 q; r
120(3 guys) - 20(owner's son) = 100 (owner) |