33) C
In the table, the overall average is $40,000. This is the average of the 10 categories.
So total income = $40,000 x 10 = $40,000
So total income = $40,000 x 10 = $40,000
Top 10% earn = $160,000 (approximate value)
Percentage earned by the top 10% = (160,000 / 400,000) x 100 = 40%