The highest that the store should sell should be at $9.5 per burrito because if they sell at $9.5, then they will get 1,805,000 for a daily revenue (9.5 x 190,000 burritos). If they sell any higher, then their daily revenue will go down. For example, if they sell at $10 a piece, they can only sell 180,000 (as per the rule that for every $0.50 increase in price, they have to lessen their sales volume by 10,000). 10 x 180,000 is 1,800,000 which is their daily revenue if they sell at $10 which is less than what they can get if they sell at $9.5.
