From the question
Percentage markup = 26%
Selling price(SP) = $350
To find the Markup
The formula below will be used
Since Cost price(CP) is not given
Hence, substitute given values to find CP
Solve for CP
Cross multiply
Expand the bracket
Collect like terms
Divide both sides by 126
Hence the cost price is $277.78
To find Markup the formula below will be used
Hence,
Therefore, the markup is $72.22