One top can fill a cistern in 2 hours and another can emp... — Answer & Explanation | PrepBeePakistan

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MEDIUMENGLISHMathematics

One top can fill a cistern in 2 hours and another can empty the cistern in 3 hours. How long will they take to fill the cistern if both the taps are opened?

Correct answer: B

Explanation

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