Question

If 190 miles is represented on a map by 3 centimeters, what distance does 10 centimeters represent?

Answer 1

well, this is simple
All you need to do is find out how much 1 inch represents first.
Do this by dividing 190 by 3. 190/3=63.3 infinite.
So, now take 63.3, and multiply it by 10!
63.3*10=633
10 centimeters represents 633 miles in the map.

Answer 2

`\bf \begin{array}{ccllll} miles&cms\\ \textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\\ 190&3\\ x&10 \end{array}\implies \cfrac{190}{x}=\cfrac{3}{10}`

solve for "x"