A drain pipe can drain a tank in 12 hours

Asked by admin @ in Math viewed by 305 People

21. A drain pipe can drain a tank in 12 hours

and a fill pipe can fill the same tank in6 hours. A total of n pipes, which include afew fill pipes and the remaining drain pipes,can fill the entire tank in 2 hours. How manyof the following values could 'n' take?​

Answered by admin @


Answer:

I don't know what is the answer


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