Leveling

Calculate how many we must purchase 25 kg bags of leveling concrete if we level room 19 m² to the "height" 11 mm if consumption is 1.7 kg per square meter and millimeter thickness.

Correct answer:

n =  15

Step-by-step explanation:

$$\begin{gathered} m_1=25\text{kg} \\ S=19{\text{m}}^2 \\ h=11\text{mm} \\ s=1.7{\text{kg/m}}^2\text{/mm} \\ n=\lceil \frac{11\cdot 19\cdot 1.7}{m_1}\rceil =\lceil \frac{11\cdot 19\cdot 1.7}{25}\rceil =15 \end{gathered}$$

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