(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Shareen finds that when she drives her motorboat upstream she can travel with a speed of only 8m/s, while she moves with a speed of 12m/s when she heads downstream. What is the current of the river on which Shareen is traveling?

3. The attempt at a solution

x= current speed

b= boat speed

x+b= 12m/s

b-x= 8m/s

b=x+8

x+x+8= 12

2x= 4

x=2

12m/s-8m/s=4m/s

Our physics class is having a debate on whether the answer is 2m/s or 4m/s and why.

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# Homework Help: River Current Speed

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