In 2009, a research company surveyed adults about the number of cups of coffee they drink per day and per week. The percentages are shown Number of Cups Percentage to the right. Two or more cups a day One cup a day 19% a) What percentage of adults drink coffee? Two cups a week b) What percentage of adults drink two cups or more of coffee a week? One cup a week c) What percentage of adults drink one or two cups per week? Don't drink coffee 28% . . . a) The percentage of adults that drink coffee is