Mathematics, 30.06.2021 23:00 sharmadaman641
A running coach records the times in seconds of young athletes running 400m, after recording the times, he calculated the average time was 57.3s.
Later he discovered that a time of 65s should have been recorded as 56s. The revised average time was 55.8 seconds.
How many athletes took part?β
Answers: 3
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A running coach records the times in seconds of young athletes running 400m, after recording the tim...
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