Bus 1 and Bus 2 run between cities A and B

Bus 1 and Bus 2 run between cities A and B. Bus 1 leaves city A at the same time Bus 2 leaves city B, each at a constant rate of speed. Their first meeting is 90 miles from city A. After reaching their respective destinations and immediately turning around, their second meeting is 30 miles from city B. What is the distance in miles between city A and city B?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #35160