Final answer:
To determine the volume in milliliters administered each hour at a rate of 30 drops per minute, you multiply the drop rate by the number of minutes in an hour and then divide by the conversion rate of drops to milliliters. The result is 90 milliliters per hour.
Step-by-step explanation:
The student is asking about converting a drop rate per minute to a volume per hour in milliliters when given a specific conversion rate between drops and milliliters. First, we need to calculate the total number of drops administered in one hour.
Since there are 30 drops per minute and 60 minutes in an hour, we multiply these two values to find the total number of drops in one hour:
- 30 drops/minute × 60 minutes/hour = 1800 drops/hour
Next, we convert the total number of drops to milliliters using the given conversion rate of 20 drops per cc. Since 1 cc is equivalent to 1 mL, we can use the same value for the conversion:
- 1800 drops ÷ 20 drops/cc = 90 cc
- 90 cc = 90 mL
Therefore, 90 milliliters of liquid are being administered each hour.