McGraw-Hill Education PTCE Review by Kristy Malacos

Author:Kristy Malacos
Language: eng
Format: epub
Publisher: McGraw-Hill Education
Published: 2021-03-15T00:00:00+00:00

2. Once the proportion is set up, solve for x. Complete this through cross multiplying first.

(1)(46) = (x)(20)

3. Next, solve for x, by dividing both sides to get x by itself. In this equation, that would be 20.

4. Multiply and divide to solve for x. Divide both sides by 20 to get x by itself.

Remember, you can estimate what the answer should be close to, so you have an idea if your calculations are correct. In this case, if you know your dose is 46mg and the medication is available in 20mg/mL, you can guess that the answer should be a little bit more than 2mL since 20mg can go into 46 twice. So if you get an answer like 20mL or 0.2mL, that should give you a clue that your answer is off.

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