Since we have that the sale price is $511, then this represents the 100-27%=73% of the total price. Then, using a rule of three we have:
[tex]\begin{gathered} 511\rightarrow73\text{ \%} \\ x\rightarrow100\text{ \%} \\ \Rightarrow x=\frac{100\cdot511}{73}=\frac{51100}{73}=700 \\ x=700 \end{gathered}[/tex]therefore, the original price of the sofa was $700
