## Elementary Technical Mathematics

You have to take $9$ mg.
RECALL: $P=BR$ where $B$=base, $P$=part, and $R$= rate or percent The given problem has: $B=60$ mg $R=15\%$ Solve for $P$ using the formula above to obtain: $P=BR \\P=15\% \times 60 \\P=0.15 \times 60 \\P=9 \text{ mg}$ Thus, you have to take $9$ mg.