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the washer is made from a disk of metal that has a mass of 41.7 g. A hole is stamped in the disk and 20.2 g of metal was removed. What is the total mass of 140 of these washers?
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the washer is made from a disk of metal that has a mass of 41.7 g. A hole is stamped in the disk and 20.2 g of metal was removed. What is the total mass of 140 of these washers?

User Alex Ciocan
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So you would do 41.7g - 20.2g and get 21.5g, then multiply it by 140g. 140g x 21.5g = 3010g
User Oswin
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