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歡迎您訪問數學考題練習:根據圖中提供的信息,可知一個杯子的價格是!

數學考題練習:根據圖中提供的信息,可知一個杯子的價格是

更新時間:2024-01-12 16:32:15作者:貝語網校

根據圖中提供的信息,可知一個杯子的價格是

A.51元

B.35元

C.8元

D.7.5元

試題答案

C

試題解析

要求一個杯子的價格,就要先設出一個未知數,然后根據題中的等量關系列方程求解.題中的等量關系是:一杯+壺=3元;二杯二壺+一杯=94.

解答:設一杯為x,一杯一壺為43元,

則右圖為三杯兩壺,即二杯二壺+一杯,

即:43×2+x=94

解得:x=8(元)

故選C.

點評:此題的關鍵是如何把左圖中一杯一壺的已知量用到右圖中,這就要找規律,仔細看不難發現,右圖是左圖的2倍+一個杯子.

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