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Shower v bath

Act 1

A video is shown of a person running a bath, and a person taking a shower. The video also shows the flow of water from the tap, and the shower head. Which is cheaper, a shower or a bath?

Act 2

A video shows filling the bath and taking a shower, and how long each takes.

Further information is given showing the time taken to fill a one gallon container from the tap, and from the shower.


How would the situation have to change for the answer to reverse itself?

How long of a shower can be had with the same amount of water used for the bath?

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