Sid and Bonnie are opposing participants in an online auction

Sid and Bonnie are opposing participants in an online auction. Each has a constant bidding strategy: Sid always bids up by raising $40 over any previous bid. Bonnie always bids up by doubling any previous bid. The auction begins with an initial bid by a third player, and progresses as follows: Sid bids up first, and Bonnie follows. Sid bids up again, and Bonnie follows and raises the bid to a final $600. What was the dollar value of the initial price?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #44246