Question

6 bags of plaster do 33m2 squared, how many m2 squared can be done with 5 bags

Answer 1

`\bf \begin{array}{ccll} bags&m^2\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 6&33\\ 5&x \end{array}\implies \cfrac{6}{5}=\cfrac{33}{x}\implies x=\cfrac{5\cdot 33}{6}`