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On 7 jobs, a welder charges 3.5 hours, 9.5 hours, 4 hours, 5.5 hours, 12 hours, 8.5 hours, and 6 hours. Find the average hours billed per job.

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  1. 3 May, 08:39
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    We need to add the 7 jobs and then divide by 7 to get an average.

    3.5 + 9.5 + 4 + 5.5 + 12 + 8.5 + 6 = 49

    49/7 = 7 hours average that are billed per job
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