Math and Dosage Calculations for Health Care 3rd Edition by James Whaley, Kathryn Booth, Booth Kathryn

Exercise 7

In Exercises 17, convert the dosage ordered to the same units as those marked on calibrated utensils. You may wish to refer to the conversion factors in Chapter 3. There may be more than one correct answer for each conversion.
Which of the following statements about calibrated droppers is true?
a. 0.25 mL equals 25 drops.
b. 0.25 mL equals 5 drops.
c. 1 mL equals 10 drops.
d. The number of drops in each milliliter varies per dropper.