A container is filled with 20 gallons of pure water. Five gallons of water is taken from the container and is replaced by 5 gallons of pure acid then mixed thoroughly. Another 5 gallons is taken from the mixture and is replaced by 5 gallons pure acid. If this process is done repeatedly, find the amount of water in the container after doing the process 15 times.

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Q: for

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Q: Find how many quarts of 6% butterfat milk and 3% butterfat milk should be mixed to yield 60 quarts…

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A: quarts 4% of butterfat milk and 1% butterfat milk should be mixed to yield 30 quarts of 2% butterfat…

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