Answer:
What Motto and Yoko used as a way to solve their problem was a actually a negotiation or specifically a bargaining.
Step-by-step explanation:
The reason to support this is that both parties present different proposals as a way to come to a position in which they actually feel satisfied with the resolution of the problem, that's why at the end of the conflict, Yoko ended up paying what was suposed to be cheaper for the remainder of the bill.