Question

if 1 tablet is triturated to make 15 mg compound, how many tablets need to be triturated to make 90 mg compound

Explanation:

Step1: Define ratio of tablets to mass

Let $x$ = number of tablets.
Ratio: $\frac{1 \text{ tablet}}{15 \text{ mg}} = \frac{x}{90 \text{ mg}}$

Step2: Solve for $x$

Rearrange to isolate $x$:
$x = \frac{1 \times 90}{15}$

Answer:

6 tablets