While extinguishing a fire that has caught a mansion, the firefighter is…

While extinguishing a fire that has caught a mansion, the firefighter is standing on the middlemost rung of the ladder. In order to reach at a better position, he climbs 6 rungs but due to the devious flames, he has to climb down 10 rungs back. When the fire calms down a little, he climbs 18 rungs to reach the top rung. How many rungs did the ladder have?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #70805