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If 4 people can stain a deck in 2 days, how many people would be required to stain the deck in only 1 day?

A 8

The number of people required to stain the deck is inversely proportional to the number of days. So, if we want to stain the deck in half the time (1 day instead of 2 days), we need to double the number of people (8 people instead of 4 people).

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