A person is said to be overweight if his or her body mass index (BMI) is between 25 and 29, inclusive; a person is said to be obese if his or her BMI is 30 or greater. The first two columns of the table provide an age distribution for adults living in country X. The third column gives the percentage of adults in each age group who are either obese or overweight. Complete parts (a) through (d) below. Age (yr) % adults % obese or overweight 18-34 42.7 41.2 35-49 28.5 56.2 50-64 16.6 68.3 65 & over 12.2 55.8 . . . a. What percentage of country X's adults are overweight or obese? % (Round to one decimal place as needed.)