Engineering, 25.01.2020 02:31, makayladurham19

Water flowing through both a small pipe and a large pipe can fill a water tank in 4 hours. water flowing through the small pipe alone can fill the tank in 15 more hours. how many hours would it take to fill the tank using only the small pipe?

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Water flowing through both a small pipe and a large pipe can fill a water tank in 4 hours. water flo...