A rower can row upstream at 7 km/hr and downstream at 11…

A rower can row upstream at 7 km/hr and downstream at 11 km/hr. What is the rower's rate in still water?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #21652

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