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Weekly Problem 31 - 2012

Weekly Problem 31 - 2012

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Weekly Problem 32 - 2012

Weekly Problem 32 - 2012

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Weekly Problem 34 - 2012

Weekly Problem 34 - 2012

Weekly Problem 33 - 2012

Stage: 3 Challenge Level: Challenge Level:1
Minnie's average speed this year is ${5\over4}$ of last year's value. Hence her time this year will be ${4\over5}$, i.e. $80\%$ of last year's time.

This problem is taken from the UKMT Mathematical Challenges.

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