比50Km的2/5少2/5Km是多少千米?

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比50Km的2/5少2/5Km是多少千米?比50Km的2/5少2/5Km是多少千米?比50Km的2/5少2/5Km是多少千米?50×2/5-2/5=20-2/5=19.6Km24.629.6

比50Km的2/5少2/5Km是多少千米?
比50Km的2/5少2/5Km是多少千米?

比50Km的2/5少2/5Km是多少千米?
50×2/5-2/5=20-2/5=19.6Km

24.6

29.6