# How long does it take to fill the water-cask with the three taps together?

+1 vote
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There is a water-cask with three different water-taps. With the smallest tap, the water-cask can be filled in 20 minutes. With the middle tap, the water-cask can be filled in 12 minutes. With the largest tap, the water-cask can be filled in 5 minutes.

posted Mar 2, 2014

+1 vote

3 mins (12+5+3 'units of water' per minute, you need 60 units)

–1 vote

3 mins 20 seconds

sorry not correct...

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