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Mathematics, 29.01.2020 23:55 densliverdensentos

Agroup of 7 campers has four hours to hike to a lighthouse and back before sundown. the lighthouse is 28 m high. it is located 12 km from camp. how fast do they have to walk?

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Agroup of 7 campers has four hours to hike to a lighthouse and back before sundown. the lighthouse i...
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