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Mathematics, 28.04.2021 06:30 butryn

The times for the race came down with practice. The average time for the 5 racers in the first race was 57 seconds. The average time for the second race was 55 seconds. For the third race, the average time was 52 seconds. What was the average time for all three races?

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The times for the race came down with practice. The average time for the 5 racers in the first race...
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