SOLUTION: Linear Equations: Real World Applications As a nurse, part of your daily duties is to mix medications in the proper proportions for your patients. For one of your regular patients

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Question 1200615: Linear Equations: Real World Applications
As a nurse, part of your daily duties is to mix medications in the proper proportions for your patients. For one of your regular patients, you always mix Medication A with Medication B in the same proportion.
Last week, your patient's doctor indicated that you should mix 70 milligrams of Medication A with 49 milligrams of Medication B. However this week, the doctor said to only use 28 milligrams of Medication B. How many milligrams of Medication A should be mixed this week?
This week, _______ milligrams of Medication A should be mixed with 28 milligrams of Medication B.

(PLEASE LIST OUT STEPS, i'm not understanding)
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
.

Write a proportion as you read the problem

    A%2FB = 70%2F49 = x%2F28.


From the proportion, find  x = %2828%2A70%29%2F49 = %284%2A70%29%2F7 = 4*10 = 40 mg.


ANSWER. 40 mg of medication A.

Solved.

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For introductory lessons on proportions,  see the lessons
    - Proportions
    - Using proportions to solve word problems
    - Typical problems on proportions
    - Using proportions to estimate the number of fish in a lake
    - HOW TO algebraize and solve these problems using proportions
in this site.

Learn the entire subject from there.


Happy learning  ( ! )