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Suppose a sample of polluted water has a concentration of impurities of 330 ppm. If a filter removes exactly 90% of the impurities, what is the concentration of impurities in the filtered water? concentration: delete FoHK v BNM ? ? cmd option

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dsdrajlin

Answer:

The concentration of impurities in the filtered water is 33 ppm.

Explanation:

Initially, the concentration of impurities is 330 ppm. If the filter removes 90% of impurities, then only 10% of the original impurities remain in the filtered water. Therefore, their concentration will be 10% of 330 ppm, that is, 33 ppm.

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