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歡迎您訪問數學考題練習:某洗衣機廠今年計劃生產洗衣機2550臺,其中甲!

數學考題練習:某洗衣機廠今年計劃生產洗衣機2550臺,其中甲

更新時間:2024-01-12 14:08:58作者:貝語網校

某洗衣機廠今年計劃生產洗衣機2550臺,其中甲型、乙型、丙型三種洗衣機的數量的比為1:2:7,這三種洗衣機計劃各生產多少臺?

試題答案

解:設甲型、乙型、丙型三種洗衣機分別生產x、2x、7x臺,

依題意得:x+2x+7x=2550,

解得:x=255,

∴2x=2×1500=510,7x=7×255=1785,

答:甲型、乙型、丙型三種洗衣機分別生產255臺、510臺、1785臺.

試題解析

設甲型、乙型、丙型三種洗衣機分別生產x、2x、7x臺,由于洗衣機廠今年計劃生產洗衣機2550臺,由此即可列出方程,解方程即可求出結果.

點評:此題首先根據三種洗衣機的數量比為1:2:7設未知數,然后根據今年計劃生產洗衣機的總臺數列出方程,由此即可解決問題.

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