From the question
Percentage markup = 26%
Selling price(SP) = $350
To find the Markup
The formula below will be used
![\text{ \%Markup }=(SP-CP)/(CP)-100\text{\%}](https://img.qammunity.org/2023/formulas/mathematics/college/4ydobier9q65mexc1evv3janvchxeresip.png)
Since Cost price(CP) is not given
Hence, substitute given values to find CP
![26=(350-CP)/(CP)*100](https://img.qammunity.org/2023/formulas/mathematics/college/pmnirri1a4fte6xzwhsvnlna9e44mllllf.png)
Solve for CP
Cross multiply
![26CP=100(350-CP)](https://img.qammunity.org/2023/formulas/mathematics/college/itk6n0fkjk3qkmlwyq1zhuj885brea0own.png)
Expand the bracket
![26CP=35000-100CP](https://img.qammunity.org/2023/formulas/mathematics/college/k4dezqpzi0octtlj5vh15bc5r6tlmjc112.png)
Collect like terms
![\begin{gathered} 26CP+100CP=35000 \\ 126CP=35000 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/ozhsus9nra6b0j7k6cwn4s90licnyxin16.png)
Divide both sides by 126
![\begin{gathered} (126CP)/(126)=(35000)/(126) \\ CP=\text{ \$}277.78 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/oxu4nm9ps45utn74y7a7wh93t7e87xzrme.png)
Hence the cost price is $277.78
To find Markup the formula below will be used
![\text{Markup }=SP-CP](https://img.qammunity.org/2023/formulas/mathematics/college/sg0ma1qawk5yq7oxoqxv5k3r1ln3m0egrp.png)
Hence,
![\begin{gathered} \text{Markup }=\text{ \$}350-\text{ \$}277.78 \\ \text{Markup }=\text{ \$}72.22 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/dwzsnmxkml95jv7adbhcvnkqvlaqfbx7bg.png)
Therefore, the markup is $72.22