作者hsingchih (請賜我GRE高分吧!!)
看板GRE_Verbal
標題[計量] 數學
時間Wed Oct 31 15:09:23 2007
Worker W produces n units in 5 hours. Workers V and W,working independently
but at the same time, produce n units in 2 hours. How long would it take
V alone to produce n units?
(A) 1hr 26min
(B) 1hr 53min
(C) 2hr 30min
(D) 3hr 20min
(E) 3hr 30min
ANS: D
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