A few days ago
Quick math help: is this the right equation?
Here’s the Problem:
A pharmacist is to prepare a 15mL solution of eye drops. The eye drop solution must have a 4% active ingredient, but the pharmacist only has 20% solution and 1% solution is stock. How many mL of each solution will he need?
I’m not asking anyone to do my homework, so please don’t take it that way, but I was wondering, is this the right equation for this type of problem? :
0.20x + 0.01y = 0.04(15)
Top 1 Answers
A few days ago
Favorite Answer
That is a correct equation if x is the number of ml. of 20% solution and y is the number of ml. of 1% solution.
To solve it, you need one further equation, as there are two unknowns x and y.
That comes from the fact that the volumes need to add up to 15ml.
Hence:
x + y = 15.
You can now say y = 15 – x, and susbstitute that in your first equation, so that you can solve for x.
0
- Academic Writing
- Accounting
- Anthropology
- Article
- Blog
- Business
- Career
- Case Study
- Critical Thinking
- Culture
- Dissertation
- Education
- Education Questions
- Essay Tips
- Essay Writing
- Finance
- Free Essay Samples
- Free Essay Templates
- Free Essay Topics
- Health
- History
- Human Resources
- Law
- Literature
- Management
- Marketing
- Nursing
- other
- Politics
- Problem Solving
- Psychology
- Report
- Research Paper
- Review Writing
- Social Issues
- Speech Writing
- Term Paper
- Thesis Writing
- Writing Styles