The following table shows the distribution of household incomes in 2010 for a sample of 1,000 households in a country with incomes up to $100,000. Income Bracket ($) 0 19,999 20,000 39,999 40,000 59,999 60,000 79,999 80,000 99,999 Households 200 280 230 170 120 Use this information to estimate, to the nearest $1,000, the average household income for such households