Prep T2-PS-154

[w062611]

Bobby bought two shares of stock, which he sold for $96 each. If he had a profit of 20 percent on the sale of one of the shares but a loss of 20 percent on the sale of the other share, then on the sale of both shares combined Bobby had

(A) a profit of $10
(B) a profit of $8
(C) a loss of $8
(D) a loss of $10
(E) neither a profit nor a loss

答案為C

我怎麼算都是E

請高手指點一下小弟那裡觀念錯誤了

感謝

[hwatai]

有賺的那一張股票買在80元，賣在96元得+20%
賠錢的那一張股票買在120元，賣在96元得-20%

總成本為80+120=200元
總賣出價為96*2=192元

故ANSWER GOES TO (C), a loss of $8

[w062611]

感謝指導

[小花]

有賺的那一張股票買在80元，賣在96元得+20%
賠錢的那一張股票買在120元，賣在96元得-20%

總成本為80+120=200元
總賣出價為96*2=192元

故ANSWER GOES TO (C), a loss of $8

請問80 , 120要如何推出來呢?

[小花]

想到了

96-x=20%X
x=80