建议使用官方纸质指南，查看对照完整题目
【OG20-P158-78题】
Of the land owned by a farmer, 90 percent was cleared for planting. Of the cleared land, 40 percent was planted with soybeans and 50 percent of the cleared land was planted with wheat. If the remaining 720 acres of cleared land was planted with corn, how many acres did the farmer own?
-
分析A选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -
分析B选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -
分析C选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -
分析D选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx -
分析E选项
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
- 网友解析
我有更好的解析 
暂无雷哥网文字解析
预约讲师一对一题目解析课程题目：已知某农民所有的土地中，90%用于耕种，其中40%种了大豆，50%种了小麦，假设剩下的720英亩种了玉米，那么农夫拥有的土地一共是多少英亩？
解答：解题的关键在于区分几个百分比的含义。
在90%的耕地中，用于大豆和小麦的比例一共是90%，即玉米占据耕地的10%, 因此耕地面积=720/10%=7200英亩，而耕地占总面积的90%，因此总面积=7200/90%=8000英亩，答案选D。
题目讨论 （1条评论）
-
emily666
0.9*0.1*X=720 求X
0
0
回复
2020-03-10 17:40:57
