Question

If ¼ gallon of paint covers 1/12 of a wall, then how many quarters of paint are needed for the entire wall?

Answer 1

Equivalences

We know that

1 quarter gallon of paint ⇄ 1/12 wall

?? ⇄ 1 wall

Now we just divide both sides of the equivalence

`\begin{gathered} (1)/(?)=((1)/(12))/(1) \\ (1)/(?)=(1)/(12) \end{gathered}`

We clear the equation in order to find the unkown value

`\begin{gathered} (1\cdot12)/(1)=\text{?} \\ 12=\text{?} \end{gathered}`

Then, we need 12 quarters of paint