Building a wall

If 12 men can build a wall 398 meters long in 48 days, how long would it take 33 men to build a wall 347 meters long? Answer to 3 decimal places.

Correct answer:

t =  15.218 d

Step-by-step explanation:

$$\begin{gathered} d=398/(48\cdot 12)=\frac{199}{288}\doteq 0.691\text{m/d} \\ t=\frac{347}{33\cdot d}=\frac{347}{33\cdot \frac{199}{288}}=15.218\text{d} \end{gathered}$$

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