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Shashank Shah

· started a discussion

· 1 Months ago

any other method ? (Question: 275765.0 )

Please suggest some other method also

Question:

A drain pipe can drain a tank in 12 hours and a fill pipe can fill the same tank in 6 hours. A total of x pipes, which include a few fill pipes and the remaining drain pipes can fill the entire tank in 2 hours. How many of the following values could ‘x’ take?

Options:
A)

20

B)

16

C)

33

D)

13

Solution:

Ans: (c)

Filled pipe can filled tank in 6 hrs.

Drain pipe can drained the tank in 12 hrs.

So, the ratio is 2 : 1 of filled and drainage.

And the n is should be multiple of 3 only C answer can fulfill the condition.

Rishi kumar

· commented

· 1 Months ago

detail me bataie please
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