Everyone drinks the same

24 bricklayers drink 72 beverage bottles a day at the construction site. How many bottles would 19 bricklayers need? Everyone drinks the same.

Correct result:

n =  57

Solution:

$$\begin{gathered} z=72\mathrm{/}24=3 \\ n=19\cdot z=19\cdot 3=57 \end{gathered}$$

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