[問題] 請問一題數學
Two water pumps, working simultaneously at their respective constant rates,
took exactly 4 hours to fill a certain swimming pool. If the constant rate
of one pump was 1.5 times the constant rate of the other, how many hours would
it have taken the faster pump to fill the pool if it had worked alone at
its constant rate?
答案是 20/3
請問這題要怎麼算 謝謝
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女:老闆.我要叫一桶瓦斯
我:小姐.幾點了.還在叫瓦斯啊
女:我要洗澡沒瓦斯啊.當然要叫瓦斯啊
我:我要打泡還找不到女人咧
女:我有再做.可以算你便宜一點喔.你要不要.我現在可以去你那邊
我:.......................... 來吧
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