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Question

In what time would a Cistern be filled by three pipes whose diameter are 2cm, 8/3cm and 4cm running together, where the largest pipe alone fill it in 183 minutes. The amount of water flowing in by each pipe being directly proportional to the square of diameter?

A 72 minutes

B 110 minutes

C 140 minutes

D 206 minutes

E 108 minutes

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