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Sixth grade inverse proportion math problem
Solution: The first question: 7×24÷6=28 (teeth)

Question 2: It is known that B rotates 7 times and C rotates 1 time. Then when C rotates 6 times, B rotates 42 times.

And because A turns 7 times, gear C turns 6 times. So when A rotates 7 times, B rotates 42 times.

Every time A turns, B turns six times. When A rotates 8 times, B rotates 48 times.

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