GRE Problem Solving Question 429

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Source: Magoosh

In Dewey Elementary School, there are two second-grade classes: class A has 35 students and class B has 45 students. If 40% of the students in class A walk to school, and 80% of the students in class B walk to school, what percent of all the students in the second-grade at Dewey Elementary walk to school?

  • A 0.4
  • B 0.425
  • C 0.6
  • D 0.625
  • E 0.75

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