英文
Average vehicle occupancy rate for commuters to County W is 1.2,
average vehicle occupancy rate for commuters to County Z is 1.5.
If the total number of commuters to County W is twice the number to County Z,and if the average number of vehicles that transport commuters daily to County W is 30000,what is the approximate average number of vehicles that transport commuters daily to County
我认为是一下翻译和结果
为18750.
答案是接近12000,而不是接近18000.为什么
人气:312 ℃ 时间:2020-06-22 19:29:12
解答
我的算法是:
去W的车是30000辆,但它的人数是去Z的两倍,所以要进行比较时,要对等的比较.所以如果把去W的人数减半的话,就是同口径相比了,即:
(30000/2):1.5=x:1.2
15000:1.5=x:1.2
x=(15000*1.2)/1.5
x=12000
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