Shelly rows \(4m\) kilometers downstream at \(6x\) kilometers per hour. Then she turns around and rows \(m/6\)

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Shelly rows \(4m\) kilometers downstream at \(6x\) kilometers per hour. Then she turns around and rows \(m/6\) kilometers upstream at \(2x\) kilometers per hour. What is Shelly's average rowing speed in kilometers per hour during the entire journey?

A. \(50x/9\)
B. \(50x/(9m)\)
C. \(50/9\)
D. \(50m/9\)
E. \(50mx/9\)

The OA is A
Source: — Problem Solving |