The pharmacy’s recipe book provides a formula that yields 15 g of an ointment. You are asked to prepare a 90 g jar of the ointment. By what number do you need to divide each ingredient to make the desired formula?

You need to prepare a compound of a medication with a concentration of 5%. How many grams of the medication will be in 100 g of the final product?

You need to prepare a compound of a medication with a concentration of 15%. How many grams of the medication will be in 150 g of the final product?

You need to prepare 250 mL of D8W from D5W and D20W. How many milliliters of each solution will you need?

You need to prepare a compound of a medication with a concentration of 20%. How many grams of the medication will be in 120 g of the final product?

You need to prepare 100 g of a 20% ointment using a 50% and a 10% ointment. How many grams of each ointment will you need?

A pharmacy’s recipe book provides a formula that yields 80 g of an ointment. You are to prepare 20 g of the ointment. The formula calls for 12 g of Drug A, 2 g of Drug B, 10 g of Drug C, and 56 g of Petrolatum Base Ointment. How much of each ingredient will you need?

A pharmacy’s recipe book provides a formula that yields 25 mL of a drug solution. You are to prepare 175 mL of the solution. The formula calls for 4 mL of Drug A, 3 mL of Drug B, and distilled water QSAD to 25 mL. How much of each ingredient will you need?

You need to prepare a compound of medication using 10 g of active ingredient in 500 g of an ointment base. What is the percentage strength of this compounded preparation?

You need to prepare a compound of medication using 15 g of active ingredient in 450 g of an ointment base. What is the percentage strength of this compounded preparation? Round your answer to the nearest tenth of a percent.