if you brush your teeth for two minutes, then you waste an average of 10 litres per person. So turn the tap off!
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30000 gallons
None is. A good purifier removes only minerals, impurities, and pollutants from the water, without removing any of the water.
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How many gallons of water a 10 min bath takes depends entirely on how much water is put in the bathtub.If 80 gallons are wasted in a 20 min bath, im guessing you waste 40 g in a 10 min bath
You are going to make a box out of cardboard. The box needs to measure 10 cm by 5 cm by 5 cm; 10% of the final product will be wasted in the cutting process. How much cardboard do you need?