The normal or adequate breathing rate for an adult should be: Respiration and Artificial Ventilation The normal or adequate breathing rate for an adult should be: A. 6 to 10 breaths per minute B. 12 to 20 breaths per minute C. 15 to 30 breaths per minute D. 25 to 50 breaths per minute Answer: B Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+