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David assembles 12 circuit boards in 255 minutes. Amy assembles 9 circuit boards in 170 minutes. Who works at a faster rate?

David assembles 12 circuit boards in 255 minutes. Amy assembles 9 circuit boards in 170 minutes. Who works at a faster rate?
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1 vote
David assembles 12 circuit boards in 255 minutes. Amy assembles 9 circuit boards in 170 minutes. Who works at a faster rate?

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User Scot Matson
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7.7k points

2 Answers

3 votes
It would be Amy, because Amy does about 18.8 boards per min and David does about 18.75 boards per min.
answered
User Wschopohl
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8.5k points
4 votes
I think Amy works at a faster rate.
answered
User Maurizio Cucchiara
by
8.9k points
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