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解:(1)去超市購買所需費用 即··········································································································· 1分 去超市購買所需費用 即········································································································· 2分 當時.即 當時.即 當時.即 ·························································································································· 4分 綜上所述:當時.去超市購買更合算,當時.去超市或超市購買一樣,當時.去超市購買更合算．···················································································································· 5分 (2)當時.即購買10副球拍應(yīng)配120個乒乓球 若只去超市購買的費用為: (元)············································································· 6分 若在超市購買10副球拍.去超市購買余下的乒乓球的費用為: (元)··············································································· 7分 最佳方案為:只在超市購買10副球拍.同時獲得送30個乒乓球.然后去超市按九折購買90個乒乓球． 8分 【查看更多】

 

題目列表(包括答案和解析)

16、問題背景：
A、B兩家超市都有某種品牌的乒乓球拍和乒乓球出售，且每副球拍的標價都為50元，每個乒乓球的標價都為2元．現(xiàn)兩家超市正在促銷，A超市所有商品均打九折銷售，而B超市買一副乒乓球拍送4個乒乓球．若僅考慮購買球拍和乒乓球的費用．
（1）如果只在某一家超市購一副乒乓球拍和10個乒乓球，問去A超市還是B超市買更合算？
遷移運用：
（2）某乒乓球訓練館準備購買n副該種品牌的乒乓球拍，每副球拍配k（k≥4）個乒乓球．如果只在某一家超市購買，問去A超市還是B超市買更合算？
拓展延伸：
（3）若乒乓球訓練館準備購買n副該種品牌的乒乓球拍，每副球拍配20個乒乓球．請通過計算設(shè)計出最省錢的購買方案．

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列方程（組）解應(yīng)用題：
張欣的媽媽用面值為100元的購物券去超市購物．她們想購買的兩種商品分別是：每袋8元的洗衣粉和每袋15元的巧克力，且打算兩種商品共買9袋．請問她們應(yīng)該購買兩種商品各幾袋，才能使購物券恰好用完．

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列方程(組)解應(yīng)用題
張欣的媽媽用面值為100元的購物券去超市購物。她們想購買的兩種商品分別是：每袋8元的洗衣粉和每袋15元的巧克力，且打算兩種商品共買9袋。請問她們應(yīng)該購買兩種商品各幾袋，才能使購物券恰好用完？

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列方程(組)解應(yīng)用題

張欣的媽媽用面值為100元的購物券去超市購物。她們想購買的兩種商品分別是：每袋8元的洗衣粉和每袋15元的巧克力，且打算兩種商品共買9袋。請問她們應(yīng)該購買兩種商品各幾袋，才能使購物券恰好用完？

 

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列方程（組）解應(yīng)用題：
張欣的媽媽用面值為100元的購物券去超市購物．她們想購買的兩種商品分別是：每袋8元的洗衣粉和每袋15元的巧克力，且打算兩種商品共買9袋．請問她們應(yīng)該購買兩種商品各幾袋，才能使購物券恰好用完．

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