ya ... right answer is ( Q6 c7 a- S4 u6 E6 X1 ?
a)$60-$55=賺左$5 x4 F: U; l# Q3 y
" q Z/ W5 X* \) Sb)$60-$62=花多左$2
! a8 Q, {; H9 i+ Vtvb now,tvbnow,bttvb
, J y+ K/ r- L; C公仔箱論壇c)$68-$62=賺左$6
* P' ^% d! \: U* s7 \6 Btvb now,tvbnow,bttvb; k, f! q4 O1 [# l+ V Z
所以:$5-$2+$6=$9 |