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High Jumping

How high can a high jumper jump? How can a high jumper jump higher without jumping higher? Read on...

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Weekly Problem 40 - 2007

Harriet Hare and Turbo Tortoise want to cross the finish line together on their 12 mile race.... What time should Harriet set off?

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Weekly Problem 32 - 2008

Malcolm and Nikki run at different speeds. They set off in opposite directions around a circular track. Where on the track will they meet?