Working alone, pump A can empty a pool in 3 hours. Working alone, pump B can empty the same pool in 2 hours. Working together, how many minutes will it take pump A and pump B to empty the pool?

Created 1 year ago | Updated 1 week ago
(ক) 72
(খ) 75
(গ) 84
(ঘ) 96
No explanation available.

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