Question

Today only, a sofa is being sold at a 27% discount. The sale price is $511. What was the price yesterday?

Answer 1

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:

`\begin{gathered} 511\rightarrow73\text{ \%} \\ x\rightarrow100\text{ \%} \\ \Rightarrow x=(100\cdot511)/(73)=(51100)/(73)=700 \\ x=700 \end{gathered}`

therefore, the original price of the sofa was $700