a group of 10 people have the following annual incomes: $24,000, $18,000, $50,000, $100,000, $12,000, $36,000, $80,000, $10,000, $24,000, $16,000. calculate the share of total income that each quintile receives from this income distribution. what percent of the total income is represented by the highest quintile? round your answer to the nearest tenth.