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Q1. How many milliliters each of a 2% w/v solution and a 7% w/v solution should be used in preparing 1 gallon of a 3.5% w/v solution?
Q2. How many grams of 2.5% hydrocortisone cream should be mixed with 360 g of 0.25% cream to make a 1% hydrocortisone cream?
Q3. How many grams of white petrolatum should be mixed with 250 g of 5% and 750 g of 15% zinc oxide ointments to prepare a 10% ointment?
Q4. How many grams of zinc oxide should be added to 3200 g of 5% zinc oxide ointment to prepare an ointment containing 20% of zinc oxide?