D. The Doctor writes a prescription for 75 mg of Diphenhydramine to be mixed with .25 oz of Shea Butter Cream. Shea Butter and Eucerin Cream have a 1:3 ratio. How many ounces of Eucerin Cream would you use in 100mg of Diphenhydramine?
If Shea Butter and Eucerin Cream have a 1:3 ratio then we would use .75 oz of Eucerin Cream for 75 mg of Diphenhydramine. So we can assume that for 100 mg of Diphenhydramine we need 1 oz of Eucerin Cream