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Indian Institute of Foreign Trade 2019 Solved Paper

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Question : 20

Total: 110

Rohit purchased a cistern which had a leakage. The cistern can be filled by two inlet pipes, which can individually fill the cistern in 12 min and 15 min respectively. Despite leakage, the two inlet pipes together can fill the cistern in 20 min. How long will it take to empty the completely full the cistern due to leakage ?

10 min.
12 min.
15 min.
16 min.

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