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Practice mode Pipes and Cistern

A pipe fills a tank in 1 hour 20 minutes. What fraction of the tank will it fill in 32 minutes?

Correct answer C. 2/5

Explanation

1 hour 20 minutes = 80 minutes, so the pipe fills 1/80 per minute. In 32 minutes it fills 32/80 = 2/5.

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Question 03 Pipes and Cistern

How long will it take to empty the tank if both the inlet pipe A and the outlet pipe B are opened simultaneously? I. A can fill the tank in 16 minutes. II. B can empty the full tank in 8 minutes.

Correct answer B. II alone sufficient while I alone not sufficient to answer

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Question 04 Pipes and Cistern

How much time will the leak take to empty the full cistern? I. The cistern is normally filled in 9 hours. II. It takes one hour more than the usual time to fill the cistern because of la leak in the bottom.

Correct answer B. II alone sufficient while I alone not sufficient to answer

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