Given:
The discount for the desk today, D=35%.
The sale price, SP=$429.
The expression for sale price is,
[tex]SP=\frac{100-D}{100}\times CP[/tex]Here, CP is the price yesterday.
Substitute the known values and solve for CP.
[tex]\begin{gathered} 429=\frac{100-35}{100}\times CP \\ 429=\frac{65}{100}\times CP \\ CP=\frac{429\times100}{65} \\ CP=660 \end{gathered}[/tex]Therefore, the price yesterday is $660.
