Mr. Garcia worked 160 hours based off of what is given in the explanation above the table.
Mrs. Garcia works 24 hours a week and there are four weeks in a month. 24 x 4 = 96 hours.
To find the total hours they worked, you add both amounts together. 160 + 96 = 256 hours.
So then, you take their total expenses which is $4,295 and divide it by how many hours they work together to get the average of how much they should get paid to meet their budget standard. $4,295/256 = $16.78