作者lovekyoko (我在Tamap 天气晴)
看板juniorhigh
标题[问题] 请问一题数学
时间Thu Oct 8 00:09:49 2009
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
请问这题要怎麽算 谢谢
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女:老板.我要叫一桶瓦斯
我:小姐.几点了.还在叫瓦斯啊
女:我要洗澡没瓦斯啊.当然要叫瓦斯啊
我:我要打泡还找不到女人咧
女:我有再做.可以算你便宜一点喔.你要不要.我现在可以去你那边
我:.......................... 来吧
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1F：推 abason:当加水速度变为原来的3/5倍时，时间就变成5/3倍 10/11 10:08
2F：推 asd123:我很想教你数学，但我不会英文阿! 10/16 18:00