Pharmacy compounding math problem?

Question

You are to prepare five 60 g jars of ointment using the following formula. How much of each ingredient will you need to create the total amount?

Coal tar 4 g
Salicyclic Acid 1 g
Triamcinolone 1% ung 15 g
Aqua-base ointment 100 g

If someone could just help me figure out how to get started here, I could figure the rest of it out myself. Thanks a bunch!

Answer 1

To make five 60 g jars of ointment you require totally
10 g of Coal tar
2.5 g of Salicyclic Acid
37.5 g of Triamcinolone
250 g of Aqua-base ointment

Solution is as follows:

the said items comprise 120 g totally they are in the ratio of 4:1:15:100 for coal tar, salicyclic acid, triamcinolone and aqua base resply...

thus, for one jar
coal tar reqd would be 4/120 * 60 = 2 g
similarly, salicyclic acid would be 1/120 * 60 = 0.5 g
triamcinolone is 15/120 * 60 = 7.5 g
aqua base is 100/120 * 60 = 50 g

for five jars it is coal tar = 5 * 2 = 10g
salicyclic acid = 5 * 0.5 = 2.5g
triamcinolone = 5 * 7.5 = 37.5g
aqua base = 5 * 50 = 250g

Answer 2

You need total 5x60g=300 g.
total ingredient 4+1+15+100=120g. You multiply 120 by 2.5 to get 300. So you multiply 4,1,15 and 100 by 2.5 to get 10g Coal tar, 2.5g Salicyclic Acid, 37.5g Triamcinolone 1% ung and 250gAqua-base ointment . (There can be other solutions but this is one of those and easy one)

Answer 3

You need 5x60=300 grams. Looking at the amounts of each ingredient, 4+1+15+100=120. You multiply 120 by 2 1/2 to get 300. So you multiply 4,1,15 and 100 by 2 1/2 to get 10g, 2 1/2g, 37 1/2g and 250g. If you add these up, you'll get 300g.

Answer 4

All those ingredients together total 120 g. So, to get 60 g, take half of each (i.e. 2 g of coal tar, half a gram of salicylic acid, and so on)

Answer 5

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