# math

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If an albuterol inhaler contains 20mg of albuterol, how many inhalation doses can be delivered if each dose contains 90mcg?

• math -

20 mg = 20 x 10^-3 g
90 mcg = 90 x 10^-6 g

no. of doses = 20 x 10^-3 / 90 x 10^-6 = 222

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