ashley91

1 dollar???

sunnyzhou

siobi

total cost = 8 + 10' c& a+ O4 Q4 ]' _5 }' m) O. v. h
total sales = 9 + 11. T) l$ d2 R7 |! Z( X2 X7 G: i# V
9 \, k3 `, k! R( N( j  S1 \) M
total profit = 20 - 18 = 2

大笨象

８（低價）元買回，９元買出，賺１元（＋１）& R( E# w( h6 N: K& Q
８（低價）元買回，１０元買入，蝕本２元（－２）5.39.217.769 m1 _$ h, R3 d+ z
８（低價）元買回，１１元買出，賺３元（＋３）+ b4 c( U7 g! Z5 c9 z5 ^( a
算式：１－２＋３＝２
) J) N  `8 V1 d3 e9 k+ k7 S% Ttvb now,tvbnow,bttvb所以係賺２元。

t33hk

２

est

Elcarim

2 dollar lor

paulwalker

2

Elcarim

tank kill