Mathematics, 02.03.2021 14:00 Jenan25

On one day, the number of members using the exercise machines was 40, correct to the nearest 10. Each member used a machine for 30 minutes, correct to the nearest 5 minutes.
Calculate the lower bound for the number of minutes the exercise machines were used on this day.

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On one day, the number of members using the exercise machines was 40, correct to the nearest 10. Ea...