Mathematics, 24.09.2019 04:00 jamesleecy06

Dennis went cross-country skiing for 6 hours on saturday he skied 20 miles uphill and then 20 miles back downhill returning to his start point. his uphill speed was 5 mph slower than his downhill speed. what was dennis speed going uphill and his speed going downhill

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Dennis went cross-country skiing for 6 hours on saturday he skied 20 miles uphill and then 20 miles...

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