PP-T2-DS-208

[aqboy[origen]]

208.

At a certain store, each notepad costs x dollars and each marker costs y dollars. If $10 is enough to buy 5 notepads and 3 markers, is $10 enough to buy 4 notepads and 4 markers instead?

(1) Each notepad costs less than $1.

(2) $10 is enough to buy 11 notepads.

ANS:E

請問這題有比較正統的解法嗎?? 我沒有算出來,只有看完題目覺得是e....

[sunnyblue13s]

你不知道...x y 的確切值....

x,y...甚至可以誇張的說他不用錢~~或你買這個商品~~店家還貼你錢~~

所以~~這類的題需要確切值~~

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看完煩請回覆懂還是不懂....我上次有"回覆"你的文章....感覺就像石沉大海一樣~~
沒有回音的感覺~~

[aqboy[origen]]

懂了懂了 感謝~