Fire Fighter Tools and Equipment No. 2 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 3 of 15 3.  What is the breaths to seconds ratio for an infant? Choices: One breath every 3 to 5 seconds One breath every 5 to 7 seconds One breath every 1 to 3 seconds One breath every 7 to 9 seconds