Lemma
MediumAverages
AQuA-RAT train #31396 · Arithmetic · Averages

Mary drove at an average speed of 40 mph for some time…

Mary drove at an average speed of 40 mph for some time and then at an average speed of 60 mph for the rest of the journey. If she made no stops during the trip and her average speed for the entire journey was 50 mph, for what fraction of the total time did she drive at 40 mph?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #31396

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