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Penny goes out for a bike ride along a dirt track. A record of the trip...

Penny goes out for a bike ride along a dirt track. A record of the trip is as follows: 20 minutes at 15 km/hour, 15 minutes at 20 km/h, 5 minutes at 0 km/h for a break, and 12 minutes at 15 km/h. What is the total distance she travelled in km?

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