A forest ranger captures and tags 80 deer.a month later she captures 50 deer and finds that seven have tags.Approximately how many deer are in the area?
人气：438 ℃ 时间：2020-01-27 19:34:53
解答
deer单复数同型
一个护林员捕获80只鹿并贴标签.（放回林子）一个月后,她捕获50只鹿,发现其中7只带有标签,问林中大约有大少只鹿?
80÷（7/50）=571
so,there are approximately 571 deer in the area.
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