AQuA-RAT train #6819 · Arithmetic · Ratio & rate
Two pipes A and B can fill a tank in 15 min…
Two pipes A and B can fill a tank in 15 min and 21 min respectively. Both the pipes are opened together but after 4 min, pipe A is turned off. What is the total time required to fill the tank?
AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #6819
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