問題詳情
14.大同國中社團成果晚會從晚上六點開始到九點結束,在 19個表演節目中,分成 5 分鐘和 7 分鐘兩種。除了中場休息10 分鐘外,每個表演前有 3 分鐘的串場時間(上、下半場的開場視為串場時間)。若 5 分鐘的表演有 x 個,7 分鐘的表演有 y 個,則依據題意可列出聯立方程式為何?
(A)
(B)
(C)
(D)
參考答案
無參考答案
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