Unit 7: Compounding Calculations: Alligation Calculations

Calculate how many parts of each ingredient are needed for the following medication order: Prepare a sodium chloride 0.9% solution using sodium chloride 0.45% solution and sodium chloride 4.5% solution.

0.45 parts of 4.5%, 3.6 parts of 0.45%

You receive the following medication order: Hydrocortisone 2% cream #30 g Using hydrocortisone 0.5% cream and hydrocortisone 2.5% cream, calculate how many parts of each ingredient you need.

1.5 parts of 2.5%, 0.5 parts of 0.5%

Calculate the amount of each ingredient for the following medication order: Prepare 50 g of triamcinolone 0.2% cream using triamcinolone 0.025% cream and triamcinolone 0.5% cream. Round to the tenths place.

18.4 g of 0.5%, 31.6 g of 0.025%acas

You receive the following medication order: Ethyl alcohol 30% solution 500 mL Using ethyl alcohol 50% and ethyl alcohol 10%, calculate how many mL of each ingredient you need.

250 mL of 50%, 250 mL of 10%

Calculate the amount of each ingredient for the following medication order: Prepare 1,000 mL of D10W using D20W and D2.5W. Round to the tenths place.

428.6 mL of D20, 571.4 mL of D2.5

You receive the following medication order: Zinc oxide 13% 80 g Using zinc oxide 10% cream and zinc oxide 20% cream, calculate how many grams of each ingredient you need.

56 g of 10% , 24 g of 20%

You receive the following medication order: D5W 250 mL Using D10W and D2.5W, calculate the quantity needed for each ingredient. Round to the tenths place.

83.3 mL of D10, 166.7 mL of D2.5