Mathematics
Mathematics, 10.12.2020 14:00, olganevarez2502

A child climbs a hill 2 km in 20 min and descends the same hill in 12 min.
Calculate average and average speed
speeds in km / h

answer
Answers: 1
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A child climbs a hill 2 km in 20 min and descends the same hill in 12 min.
Calculate average...

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