发布时间:2025-02-03 14:52:08
为方便计算,假设泳池的容积为两个时间的最小公倍数5*8=40,不需单位。则开上水管灌水速度为40/5=8,开排水管放水速度为40/8=5;两个开关同时打开,灌水速度快于排水速度,泳池里水增加的速度为8-5=3,则灌满所需的时间为: 40/3=13小时20分钟。
我跟朋友在外面开了一家美容院转让费加装修差不多10万块我现在跟她是我4她6分红也是4 6
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