What is the prescribed dosage of a certain medicine for a 6-year-old child if the adult dosage of

the medicine is 180 milligrams?

The formula below is used to calculate the correct dosage for a child:
C= a/(a+12) ∙ A

C = child’s dosage in milligrams
a = age of the child
A = adult dosage in milligrams

17. What does variable “a” represent?

Type answer here

18. What does variable “A” represent?

Type answer here

19. Using the formula above, solve for “C”. Show your work.