arguments in if else java questions

I have a homework problem but i'm stuck with the if..else code because I have no idea what i'm supposed to do there.

• Write a class that has two overloaded static methods, with the same name, for calculating payroll for a company.
• Use the If..Else structure
• If Regular payroll is less than 40 hours, there are 2 arguments – hours worked and payrate
• Else Overtime payroll is equal to regular hours = 40 hours, overtime hours = extra hours, there are 3 arguments regular hours worked, payrate, and overtime hours

• The user will use the keyboard to enter the regular hours worked,
  payrate, and overtime hours - use the Scanner class.

• The formulas for calculating the regular payroll is: hours
  payrate*hours worked

• The formula for calculating overtime payroll is: payrate * hours worked + (overtime hours * 1.5)

I think i got the rest correct, but I'm kinda stuck with my if..else code because I don't know what it means by "there are 2 arguments". I understand what arguments are in Java but not in this context. here's what i have so far:

public class ifelse {

public static double calculatePayroll (double hoursPayrate, int hoursWorked)
{
return hoursPayrate * hoursWorked;
}

public static double calculatePayroll (double hoursPayrate, int hoursWorked, double overtimeHours)
{
return hoursPayrate * hoursWorked + (overtimeHours *1.5);
}

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        double hoursPayrate, overtimeHours;
        int hoursWorked;


        Scanner keyboard = new Scanner(System.in);

        System.out.println("Enter the hours worked");
        hoursWorked = keyboard.nextInt();

        System.out.print("Enter the payrate ");
        hoursPayrate = keyboard.nextInt();

        System.out.print("Enter the overtime hours");
        overtimeHours = keyboard.nextInt();

    if (hoursWorked < 40)

    else (hoursWorked = 40)

    }