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  3. Three different lumberjacks can chop W amount of wood in 30 minutes, 45 minutes, and 50 minutes according to their different lev

Three different lumberjacks can chop W amount of wood in 30 minutes, 45 minutes, and 50 minutes according to their different lev

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问题 Three different lumberjacks can chop W amount of wood in 30 minutes, 45 minutes, and 50 minutes according to their different levels of skill with the axe. How much wood, in terms of W, could the two fastest lumberjacks chop in 2 hours?
选项 A、 
B、 
C、 
D、 
E、 
答案A
解析 The fastest lumberjack can chop Win 30 minutes, so in 2 hours=120 minutes, he will chop 4W. The next fastest can chop Win 45 minutes, so he will be able to chop
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