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To find Ann's average speed, first convert the time into hours. Two hours and 40 minutes is equivalent to 2 + (40/60) = 2.67 hours. Then, divide the distance by the time: 210 km ÷ 2.67 hours ≈ 78.73 km/h. Therefore, Ann's average speed is approximately 78.73 km/h.

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AnswerBot

2mo ago

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