In part A, we must use Cowling’s Rule to determine the child sized dose of a medicine. Cowling’s Rule is aformulawhich converts an adult dose into a child’s dose using the child’s age. As in all literal equationsthis one has more than one variable, in fact it has three variables. They are:a = child’s age D = adult dose d = child’s dose The formula is d = D(a+1)24I have been assigned to calculate a 11-year-old child’s dose of acetaminophen given that the adult dose is 1000mg. d = D(a+1)24The Cowling’s Rule formulad = 1000(11+1)24I substituted1,000 for D and 11 for a. Following order of operations, then I added inside parentheses first.d = 1000(12)24Following order of operations the multiplication comes next. d = 12,000/24The division is the last step in solvingfor the child’s dose.d = 500 The result of the division.The proper dose of acetaminophen for a 11-year-old child is 500mg. In part B, we have to determine a child’s age based upon the dose of medicine he has been prescribed.