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Question 1 of 3

If an amount of Compound Benzoic Ointment BP 1988 contains 45 g of Salicylic Acid and this is 3 % of the whole amount, how many grams of the ointment are there?

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g
There are 1500 g of Benzoic Acid Ointment.

Total amount = actual amount of item x           100        
percentage

Total amount of Benzoic Acid Ointment = 45 x  100   g
3
Total amount of Benzoic Acid Ointment = 1500 g

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Question 2 of 3

If a volume of an eye drop solution contains 3.9 ml of Distilled Witch Hazel and this is 13 % of the total volume, what is the volume of eye drop solution?

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ml
The volume of the eye drop solution is 30 ml.

Total amount = actual amount of item x           100        
percentage

Total amount of eye drop solution =   3.9   x 100 ml
13
Total amount of eye drop solution = 30 ml

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Question 3 of 3

If a mass of Aqueous Calamine Cream BP 1988 contains 2.5 g of phenoxyethanol and this is 0.5 % of the total mass, what is the total mass of Calamine Cream in grams?

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g
The total mass of Calamine Cream is 500 g.

Total amount = actual amount of item x           100        
percentage

Total amount of Calamine Cream = 2.5 x   100    g
0.5
Total amount of Calamine Cream = 500 g

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