Two pipes A and B are opened together to fill a tank. Both pipes fill the tank in a certain time. If A separately takes 16 min more than the time taken by (A + B) and B takes 9 min more than the time taken by (A + B). Find the time taken by A and B to fill the tank when both the pipes are opened together.

A) 10 min

B) 12 min

C) 15 min

D) 8 min

Correct answer:
B) 12 min

Description for Correct answer:
Here, a = 16 and b = 9

Required time = \( \Large \sqrt{ab} \)

= \( \Large \sqrt{16 \times 9} = 4 \times 3 \) =12 min

Please provide the error details in above question

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