Today's Challenge 2/6/14:
Points A and C on a map are 12 km apart if you follow a certain path. A troop of Boy Scouts leaves Point A at 11:00 a.m. They travel at 3 km/hr because they have heavy packs until they reach Point B at 12:30. If they want to reach Point C by 2:00, how fast will they have to go for the remaining trip?
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