A pole

1/8 of a pole is in mud, 1/3 of it in water, and the rest above water. If the length of the pole is 72 meters, find the length of the pole above the water.

Correct answer:

c =  39 m

Step-by-step explanation:

$$\begin{gathered} x=72\text{m} \\ a=\frac{1}{8}\cdot x=\frac{1}{8}\cdot 72=\frac{1\cdot 72}{8}=\frac{72}{8}=9\text{m} \\ b=\frac{1}{3}\cdot x=\frac{1}{3}\cdot 72=\frac{1\cdot 72}{3}=\frac{72}{3}=24\text{m} \\ c=x-a-b=72-9-24=39\text{m} \end{gathered}$$

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