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| Math Central | Quandaries & Queries |
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Question from margie, a student: My sister can walk from school to home in 40 minutes. I can walk from school to home in 30 minutes. Today I stayed for some extra help, and my sister was already 2/5 of the way home when I started. If I walk at my usual speed, can I catch my sister before she gets home? If yes exactly what fraction of the trip have we covered when I catch her? If no exactly what fraction of the trip have I covered when my sister gets home? |
Hi Margie,
Your sister had already walked $\large \frac25$ of the way home and she walks home in 40 minutes so how long has she been walking? How much longer until she reaches home? It will take you 30 minutes to walk home. Who will arrive first?
Penny
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