To find the average of the following salaries, first, let's add it together => 54 500 + 53 500 + 55 500 + 56 500 = 220 000 dollars is the total. next to do is to divide it with 4 since there are a total of 4 numbers of salaries given => 220 000 / 4 =55 000 dollars Average mean the possible amount you can have if you add all the given numbers and be divided with the count of the given number. That's how average is solve.