問題詳情
6. 多多和大大一起到早餐店，多多買了 3 個包子和 7 個饅頭共付 66 元，大大買了 7 個包子和 3 個饅頭共花了 74 元，試問一個包子比一個饅頭貴多少元？
(A) 2
(B) 3
(C) 4
(D) 5
(A) 2
(B) 3
(C) 4
(D) 5
參考答案
無參考答案
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