AlligationUse alligation to determine the parts of each strength of the components needed in each equation. Hydrocortisone cream 3%, 60 g is ordered. The stock available is a 10% cream and a 1% cream. How many grams of each must be used?
What will be an ideal response?
2 parts + 7 parts = 9 parts total, 60g ÷ 9 parts = 6.67 per part.
Therefore, 2 parts 10% (13.3 g) and 7 parts 1% (46.7 g) are needed.
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