প্রশ্ন ও উত্তর
Two pipe A & B can fill a tank in 15 minutes and 20 minutes respectively. If both pipes are opend together, then after how much time B should be closed so that the tank is full in 10 minutes?
গণিত Pipe and Tank 07 Oct, 2020
প্রশ্ন Two pipe A & B can fill a tank in 15 minutes and 20 minutes respectively. If both pipes are opend together, then after how much time B should be closed so that the tank is full in 10 minutes?
সঠিক উত্তর
20/3
মন্তব্য
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