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Mathematics, 22.01.2021 01:40 andrewsaul04

William mixes 10 cups of 10% detergent with a number of cups of 25% detergent. The resulting mixture is 20% detergent. How many cups of 25% detergent did William add to the mixture?

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William mixes 10 cups of 10% detergent with a number of cups of 25% detergent. The resulting mixture...
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