2 a/ X2 [+ u4 w 1 a {5 D$ v- \* a" W6 W这个你肯定题目看错了:! I0 M, X `" L8 A
country W is twice the number to country Z- X6 v3 f& k" X0 ~5 X8 F0 m% c
5 ~# L2 A" `8 a6 @; kthe numbers of the commuters to country W is 1.2*30000=36000 3 q4 Z8 i, A" J" U6 g% A, ~所以 the numbers of the commuters to country Z is 18000/ f3 g: v! s2 ^% F% k
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the average number of vehicles of country Z is 18000/1.5=12000