GRE Problem Solving Question 427

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Source: Magoosh

In a certain school, there are 160 boys and 240 girls. If 15 percent of the boys are left-handed and 25 percent of the girls are left-handed, what percent of the school's entire student population is left-handed?

  • A 18
  • B 20
  • C 21
  • D 23
  • E 24

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