A child's toy consists of four interlocking wooden wheels with fixed centres and 10, 15, 20 and 40 identical teeth. The wheel on the left has a handle as shown and the wheel on the right has a star marked at A.Fred uses the handle to turn the wheel on the left through 3 complete turns clockwise. In which position does the star finish?
Correct answer: C. Position C
- A. Position A
- B. Position B
- C. Position C
- D. Position D
Explanation
The star finishes in Position C because as the child turns the wheel on the left clockwise three times, the teeth on the wheels interlock and cause the star to move to Position C. Option A, B, and D are incorrect as they do not consider the rotational effect of the interlocking wooden wheels.
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