the answer is B +2.公仔箱論壇5 z, c8 r5 @) \1 G: r
let us assume that that person has $10. he pays $8 for the chicken, so he has $2 with him. he then sold the chicken for $9, and he now has $11. he pays $10 for the same chicken and has $1 left. after selling the chicken for $11, he has $12 at the end. therefore, he makes $2. |
發表於 2008-9-26 04:04 AM
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