Question

Rosa can run 4 miles in 56 minutes.how many miles does Rosa run if she runs for 42 minutes

Answer 1

`\bf \begin{array}{ccll} miles&minutes\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 4&56\\ m&42 \end{array}\implies \cfrac{4}{m}=\cfrac{56}{42}\implies \cfrac{4\cdot 42}{56}=m`