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How many visitors does a tourist attraction need next week in order to break even?

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Grandpa's Rock Cakes

Weekly Problem 34 - 2012
Grandpa made a super-heavy rock cake. Five people have guessed the weight of the cake. Can you work out the weight of his cake?

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Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

Carry out some time trials and gather some data to help you decide on the best training regime for your rowing crew.

Analyse your data and present your findings in a way that provides convincing evidence that you have identified the optimum training regime.

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