Question 261444
Given, 3% of the population has personal income under 20,000 per year 
And 69% has personal income over $50,000 per year.
So the percentage of population who have personal income 
                          under 50,000 per year = 100-69 = 31%
Therefore the percentage of the population with income 
                     between $20,000 and $50,000 = 31-3 = 28%