Usain runs twice as fast as his mum. His mum runs five times as fast as his pet tortoise, Turbo. They all set off together for a run down the same straight path.
When Usain has run 100m, how far apart are his mum and Turbo the tortoise?
Select one option, then click Submit.
5 \text{ m}
10 \text{ m}
40 \text{ m}
50 \text{ m}
55 \text{ m}
Select an option, then submit.
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Junior Mathematical Challenge 2013 (2013)
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