2006 AMC 8 Problems/Problem 4
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[hide]Problem
Initially, a spinner points west. Chenille moves it clockwise revolutions and then counterclockwise revolutions. In what direction does the spinner point after the two moves?
Solution 1
If the spinner goes clockwise revolutions and then counterclockwise revolutions, it ultimately goes counterclockwise which brings the spinner pointing .
Solution 2 (Minor improvement)
Note that full revolutions do not matter, so this is equivalent to going clockwise revolutions and then counterclockwise revolutions, making it ultimately go counterclockwise , having the spinner point .
~JeffersonJ
Video Solution by WhyMath
See Also
2006 AMC 8 (Problems • Answer Key • Resources) | ||
Preceded by Problem 3 |
Followed by Problem 5 | |
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