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[单选题]
There are 40% students in a class are married, and there are 60% of the students in the class are male. If 1/3 of the male students are married, what’s the percentage of single female students in this class?
  • 1/6
  • 1/5
  • 1/4
  • 2/5
  • 1/3
男生已婚:(6/10)*(1/3)=1/5
女生比例:1-60%=40%
女生已婚=已婚总比例-男生已婚比例:4/10-1/5=1/5
女生未婚=女生总比例-女生已婚=4/10-1/5=1/5
发表于 2019-09-11 16:37:17 回复(0)