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My friend sets out walking at a speed of $3$ miles per hour. I set out behind her $5$ minutes later at $4$ miles per hour. When I start walking, how many miles has my friend traveled?

 
 Jan 14, 2021

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Your friend has walked 5 MINUTES   ( or 1/12 of an hour) at 3 m/hr

1/12 hr  * 3 m/hr  = 1/4 mile    ahead of you when you start

 
 Jan 14, 2021
 #1
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Best Answer

Your friend has walked 5 MINUTES   ( or 1/12 of an hour) at 3 m/hr

1/12 hr  * 3 m/hr  = 1/4 mile    ahead of you when you start

 
Guest Jan 14, 2021

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