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Pipe M is as one fourth efficient as Pipe N. Pipe M can empty a tank in 60 mins. Both the pipes are opened simultaneously, and the tank is emptied. If the tank is full, in how many minutes will it be emptied?
Most Upvoted Answer
Pipe M is as one fourth efficient as Pipe N. Pipe M can empty a tank i...
Analysis:
Given that Pipe M is one fourth as efficient as Pipe N, we can assume that the rate of Pipe M is 1 unit per 60 mins and the rate of Pipe N is 4 units per 60 mins.

Calculation:
Let the total capacity of the tank be 4 units.
Pipe M can empty the tank at the rate of 1 unit per 60 mins, so it will take 240 mins to empty the tank alone.
Pipe N can empty the tank at the rate of 4 units per 60 mins, so it will take 60 mins to empty the tank alone.
When both pipes are opened simultaneously, their combined rate is 1 unit per 60 mins (1/60 + 4/60 = 5/60).

Final Answer:
Therefore, with both pipes open, the tank will be emptied in 60 minutes.
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Pipe M is as one fourth efficient as Pipe N. Pipe M can empty a tank in 60 mins. Both the pipes are opened simultaneously, and the tank is emptied. If the tank is full, in how many minutes will it be emptied?
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