Implementation of the computer purchase method

It is necessary to implement the method buyComputers. It takes a list of Computer objects. When adding each computer, its price should increase by 10%, after which all computers are stored in the internal list inventory of the ComputerShop class.

public class Computer {
    private double cost;

    public Computer(float cost) {
        this.cost = cost;
    }

    public void start() {
        System.out.println("Computer is turned on");
    }

    public void setCost(double cost) {
        this.cost = cost;
    }

    public double getCost() {
        return cost;
    }
}

public class ComputerShop {
    private List<Computer> inventory;

    public void buyComputers(List<Computer> incoming) {
        // implementation will increase the price of each computer by 10% and add to inventory
    }
}