# Math

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Not sure how to phrase this question but - I want to know who won a contest that lasted over a 5 day period. Craig completed 50 surveys in 40 hours and Ohad completed 29 surveys in 34 hours and Brad completed 15 surveys in 20 hours. I would like the formula and step by step suggestions on the procedure please.

It is not clear to me what the critieria for winning is. How is the winner determined? Most surveys? Most time spent? Least time spent? Largest survey /time rate?

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