Write the ratio or rate in simplest form.
-81 revolutions in 72 seconds
A) $\frac{9 \text { revolutions }}{8 \mathrm{sec}}$
B) $\frac{81 \text { revolutions }}{9 \mathrm{sec}}$
C) $\frac{9 \text { revolutions }}{72 \mathrm{sec}}$
D) $\frac{72 \text { revolutions }}{81 \mathrm{sec}}$

Question

Quizplus · Accepted Answer

To simplify the ratio 81 revolutions in 72 seconds, divide both the numerator and the denominator by their greatest common divisor, which is 9. This gives $\frac{81}{72} = \frac{9}{8}$, resulting in $\frac{9 \text{ revolutions }}{8 \text{ sec}}$.

Write the Ratio or Rate in Simplest Form 9 revolutions 8sec\frac{9 \text { revolutions }}{8 \mathrm{sec}}8sec9 revolutions ​

Write the Ratio or Rate in Simplest Form $\frac{9 \text { revolutions }}{8 \mathrm{sec}}$