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An inlet pipe can fill a tank in 2 hours...

An inlet pipe can fill a tank in 2 hours and an outlet pipe can empty a fully filled tank in 3 hours. If the inlet and outlet pipe are opened simultaneously, in what time will the empty tank be filled?
कोई आंतरिक पाइप 2 घंटे में किसी टंकी को भर सकता है और बाहरी पाइप 3 घंटे में पूरी भरी हुई टंकी को खली कर सकता है . यदि आंतरिक और बाहरी पाइप को एक साथ खोल दिया जाता है, तो खाली टंकी कितने समय में भर जाएगी?

A

2 h

B

`3/2` h

C

3 h

D

6 h

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