You are asked to prepare zinc oxide paste using the following formula:
Zinc oxide 1 part
Calamine 1 part
Starch 2 parts
Petrolatum 4 parts
How many farms if each component will you use to prepare 3 ounces of the product?
It would help if you proofread your questions before you posted them.
"farms"?
Also, we do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though.