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A small whirlpool bathtub measures 5 ft by 4 ft by 3 ft. The flow rate of a shower head is 1.75 gallons of water per minute. Compute the water used in taking a bath in a half-full tub, and the water used in a 12 minute shower. Which uses less water? (7.5 gallons of water = 1 cubic foot of water.)

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Answer:

The shower uses less water

Step-by-step explanation:

In 12min the shower will use:

Shower = 1.75 gallons/min * 12min = 21 gallons of water

The bathtub at full capacity will store approximately:

Full Bathtub = 5*4*3 = 60ft^3 * 7.5 gallons/ft^3 = 450 gallons of water.

Since the tub is half-full, it will use:

Half Bathtub = 225 gallons of water. A lot more than the shower.

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