Lemma
MediumRatio & rate
AQuA-RAT train #95027 · Arithmetic · Ratio & rate

Two pipes A and B can fill a cistern in 37.5 minutes…

Two pipes A and B can fill a cistern in 37.5 minutes and 45 minutes respectively. This cistern will be filled in half an hour if both the pipes are opened together initially and pipe B is then turned off after X minutes. What is X?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #95027

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