Answer
a. A woman weighing 190 pounds would need to take 608 mg of medicine.
b. She would need to take 152 mg per 6 hours
Work Step by Step
a. 190 (what the woman weights)/25 (ratio of medicine to body weight) = 7.6
7.6 x 80 (mg per 25 pounds) = 608 mg of medicine
b. 608 (mg she needs to take per day)/4 (numbers of intervals per day she needs to take if she wanted to take the medicine every 6 hours) = 152 mg per 6 hours