Calculate the gravity rate for Gentamycin 60 mg/100 mL with secondary tubing (12 gtts/mL) over 60 minutes (Round to a whole number).

Step 1 is identify the total volume in milliliters (mL) and the total time in minutes (min): 100 mL over 60 min. Step 2 is calculate the flow rate in drops per minute (gtt/min) using the formula (Total Volume in mL÷Total Time in min) ×Drop Factor in gtts/mL: (100 mL÷ 60 min) × 12 gtts/ mL. Step 3 is (1.6666. mL/ min) × 12 gtts/ mL. Step 4 is 1.6666. × 12 gtts = 20 gtts/min. Step 5 is Round to a whole number: 20 gtts/min. The final calculated answer is 20 gtts/min.