plz solve this question it's urgent plz fast
12 no. question
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oooooooo9ooooooooooooooo
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Step-by-step explanation:
If three pumps working together 8 hours a day can empty a tank in 2 days. it means the volume of the tank is such that it requires pumping of 3*8*2 = 48 pump-day-hours. 48 pump-day-hours/4pump-day = 12 hours.
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