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Evaluate the following without using a calculator.

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If you are unsure of how to do a question, click on Reveal answers to see the full working. Then, once you understand how to do the question, click on Try another question like this one to start again.

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You are preparing an infusion. The order is $\\var{m}$ {unit} of a certain drug made up to $\\var{v}$ mL with normal saline. What is the concentration of the infusion in {unit}/mL?

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[[0]] {unit}/mL (to the nearest whole number)

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\\begin{align}\\text{concentration (mg/mL)}&=\\frac{\\text{mass (mg)}}{\\text{volume (mL)}}\\\\&=\\frac{\\var{m} \\text{ mg}}{\\var{v} \\text{ mL}}\\\\&=\\var{crounded} \\text{ mg/mL (to the nearest whole number)}\\end{align}

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\\begin{align}\\text{concentration (mcg/mL)}&=\\frac{\\text{mass (mcg)}}{\\text{volume (mL)}}\\\\&=\\frac{\\var{m} \\text{ mcg}}{\\var{v} \\text{ mL}}\\\\&=\\var{crounded} \\text{ mcg/mL (to the nearest whole number)}\\end{align}

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