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A patient uses 18 units of insulin every morning and 10 units of insulin at 7 pm. If a 10 ml vial of insulin contains 100U/ml, how long will the vial last? a. 10 days b. 35 days c. 30 days d. 15 days You need to prepare a compound of zinc oxide using 8 grams of zinc oxide powder in 454 grams of petrolatum base ointment. What is the percentage strength of this compounded preparation? a. 1.5 % b. 1.6 % c. 1.7 % d. 1.8 %
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