a store buys a sweater for $25.00 and sells it for $35.00. find the percent of markup.can somebody please explain how to find the answer?I don't understand how to do this .

Mark-up percentage equals

(selling price-cost price)/(cost price).

For example, if I buy a case of oranges for $25 and sell it for $30, the mark-up is ($35-30)=$5 and the percentage mark-up is
$5/$25=20%.