90 ppm lead in paint is equivalent to which percent?

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Study for the US EPA Model Lead Inspector Test. Use flashcards and multiple-choice questions with hints and explanations for comprehensive preparation. Get exam-ready with ease!

Multiple Choice

90 ppm lead in paint is equivalent to which percent?

Explanation:
Converting ppm to percent uses the fact that 1% equals 10,000 ppm. So the percent value is ppm divided by 10,000. For 90 ppm, 90 ÷ 10,000 = 0.009, which means 0.009%. Quick check: 100 ppm would be 0.01%, 900 ppm would be 0.09%, and 9 ppm would be 0.0009%. The 90 ppm result aligns with 0.009%.

Converting ppm to percent uses the fact that 1% equals 10,000 ppm. So the percent value is ppm divided by 10,000. For 90 ppm, 90 ÷ 10,000 = 0.009, which means 0.009%. Quick check: 100 ppm would be 0.01%, 900 ppm would be 0.09%, and 9 ppm would be 0.0009%. The 90 ppm result aligns with 0.009%.

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