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4 years ago

14

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.

2 answers:

maksim [4K]4 years ago

7 0

Let the time at which the two friends are at the same distance be x. With this representation, the equation would be,

3x = 4(x - 5/60)

The value of x from the equation is 0.33, which has a units of hours. Since, we are in minutes.

minutes = (0.333)(60)
minutes = 20

Answer: 20 minutes

Schach [20]4 years ago

3 0

Answer:

20

Step-by-step explanation:

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