From the given case/scenario, we can state that this industry is influenced by status-quo pricing strategy. This pricing strategy is referred to to as the strategy under which a company or organization copies the price level of the competitors or tries to maintain current price level for similar products, commodities or services available in market. The status quo is mostly defined by the way things persists , instead of the way it could be.
Imagine what x is quantity of stools. So 3x+120=4x x=120 120 stools in cafeteria 120 chairs in cafeteria 120+120=240 There 240 people can sit in this cafeteria