A car manufacturer notices that they can sell 11 cars at £18,200, but in order to sell 12 cars they have to drop the price to £17,400. The marginal cost of producing the 12th car is £9,000. Which of the following statements is correct?.

Aschool cafeteria has 40 tables. 35% of the tables have 8 chairs at each table. the remaining 65% of the tables have 6 chairs at each table. complete the model. then complete the statements to find the total number of chairs in the cafeteria.