Tank filling

A worker would fill the tank with one inlet in 36 minutes, the other in 45 minutes. How long will it take to fill the tank if the water flows through the first inlet for 9 minutes and then both simultaneously?

Final Answer:

t =  24 min

Step-by-step explanation:


t/36+(t-9)/45=1

9t = 216


t = 216/9 = 24

t = 24

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algebrabasic operations and conceptsUnits of physical quantitiesthemes, topicsGrade of the word problem

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