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A particular dishwasher uses 44 gallons of water per load. Their advertising claims that hand washing the dishes uses 66 times as much water. According to this estimate, how many gallons of water would it save to wash 215215 loads using the dishwasher instead of by hand

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Q. A particular dishwasher uses 44 gallons of water per load. Their advertising claims that hand washing the dishes uses 66 times as much water. According to this estimate, how many gallons of water would it save to wash 215215 loads using the dishwasher instead of by hand
  1. Calculate water per load: Calculate the amount of water used per load when washing by hand.\newlineHand washing uses 66 times as much water as the dishwasher.\newline6×46 \times 4 gallons per load = 2424 gallons per load.
  2. Total water for 215215 loads by hand: Calculate the total amount of water used for 215215 loads when washing by hand.\newline215215 loads ×24\times 24 gallons per load =5160= 5160 gallons.
  3. Total water for 215215 loads by dishwasher: Calculate the total amount of water used for 215215 loads using the dishwasher.\newline215215 loads ×4\times 4 gallons per load =860= 860 gallons.
  4. Calculate water saved: Calculate the amount of water saved by using the dishwasher for 215215 loads instead of washing by hand.\newlineWater saved == Water used by hand - Water used by dishwasher.\newlineWater saved =5160= 5160 gallons 860- 860 gallons =4300= 4300 gallons.

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