A team of physician has determined that of all the athletes who were treated for minor back pain, 72% responded to an analgesic, 59% responded to a muscle relaxant, and 44% responded to both forms of treatment.

Question

a) What percent of the athletes who were treated responded to the muscle relaxant but not to the analgesic?

(b) What percent of the athletes who were treated did not respond to either form of treatment?

Answer 1

(a) 59-44 = 15
(b) 72+59-44 = 87, so 13%