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30 August, 19:06

Tammy and Jodi assembled 420 circuit boards in 8 hours. The next day they assembled 36 more circuit boards in the same amount of time. What was their average rate on the second day? A. 87 boards per hour B. 70 boards per hour C. 57 boards per hour D. 36 boards per hour

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  1. 30 August, 19:18
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    1st day

    8 hours = 420 circuits

    2nd day

    8 hours = 420 + 36

    = 456 circuits

    Average = 456/8

    = 57 circuits per hour

    Option C. Is the right answer
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