Middle School:
Question: Mr. Brown teaches 6th grade math and runs the chess club. 75% of the students in his chess club are also in his math class. The other 8 students in the chess club have a different math teacher. How many students are there in the chess club?
Answer: 32 students
Solution: If 75% of the students are in Mr. Brown's math class, that means that 25% are not. We know that 8 is 25%, or one quarter, of the total number of students, so the total must be 8 x 4 = 32 students.
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