Well if you look up Cowling's rule it states:fraction of the adult dose obtained by dividing the age of the child at the nearest birthday by 24 (source internet dictionary).
So let's let the age of the child be represented by the variable x.
so x/24 is the fraction of the dosage the child needs to take of the adult dosage.
the adult dosage in this case in 500mg so the equation to set up is
(x/24)500=child's dosage
the child's dosage is said to be 187mg so input that into the equation.
(x/24)500= 187
another way to look at it is
500x=187/24
now isolate and solve for x
the answer should be around 9 if you do the algebra correctly.
Using Cowling’s Rule what is the age of the child if the adults dose is 500mg and the child dose is 187 mg?
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