Question

The height of pole $A$ is $\frac{5}{6}$ of pole $B$, and the height of pole $B$ is $\frac{1}{2}$ of pole $C$. If the height of pole $C$ is $72m$, how tall is pole $A$?

• A. $60m$
• B. $30m$
• C. $18m$
• D. $12m$

Answer 1

The correct option is B $30m$

Given height of pole C is 72 m

And given height of pole B is $\frac{1}{2}$ of pole C

Then height of pole B $=\frac{1}{2}\times 72=36$ m

And given height of pole A is $\frac{5}{6}$ of pole B

Then height of pole A $=\frac{5}{6}\times 36=30$ m