Answer :

Number of hours Tap A requires to fill an empty tank : 8 hours


Number of hours Tap B requires to empty the full tank : 12 hours


Amount of water filled by Tap A in empty tank in one hour:


Amount of water Tap B empties in one hour:


Amount of water filled by Tap A and Tap B together in one hour: =


They can fill the tank together in 24 hours.


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RS Aggarwal - Mathematics