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The early version of a cell phone was 90 mm thick.The current version is about 10 percent thinner. How thick is the newer version?
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The early version of a cell phone was 90 mm thick.The current version is about 10 percent thinner. How thick is the newer version?

User Chaye
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the new version is 9 mm thick because the earlier version was 90 so you got to multiply 90 times .10 equals 9 mm . Simple .
User Reynosh
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