Lemma
MediumRatio & rate
AQuA-RAT train #9622 · Arithmetic · Ratio & rate

Two trains 140 m and 210 m long run at the speed…

Two trains 140 m and 210 m long run at the speed of 60 km/hr and 40 km/hr respectively in opposite directions on parallel tracks. The time which they take to cross each other is?

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 #9622

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