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12 June, 05:24

Marcie ran the 400-meter race 3 times. Her fastest time was 52.3 seconds. her slowest time was 56.3 seconds. If her average time was 54.0 seconds, what was her time for the third race?

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  1. 12 June, 07:03
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    52.3+56.3+53.4=162 162/3=54
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