Question

Prescription for Marilyn JonesPiroxicam 20 milligrams (mg) capsules: take 1 capsule 2 times a dayGlucotrol 2.5 milligrams (mg) tablets: take 1 tablet every morningIsoniazid 100 milligrams (mg) tablets: take 1 tablet 3 times a dayHow many tablets should the pharmacy give Marilyn to fill the Isoniazid for 45 days?

Answer 1

Let:

a = tablets per day

x = Number of days

y = Total tablets

so:

`\begin{gathered} y=ax \\ where \\ a=3 \\ x=45 \\ so\colon \\ y=3\cdot45 \\ y=135 \end{gathered}`

Answer:

135 tablets