Question: There are three inlet taps whose diameters are 1 cm, 2 cm and 3 cm. The rate of water flow is directly proportional to the

There are three inlet taps whose diameters are 1 cm, 2 cm and 3 cm. The rate of water flow is directly proportional to the square of the diameter. It takes 9 mins for the smallest pipe to fill an empty tank. Find out the time taken to fill an empty tank, when all the three taps are opened.

(a) 9/14

(b) 14/9

(c) 3

(d) None of these.

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