A hardware store purchases a drill for $80 and marks it up by 60% They then offer a 20% discount on the marked-up price. The store manager calculates the final sale price as $64 The manager's steps are shown below: Calculate the marked-up price: $80+($80⋅0.60)=$128 Apply the discount: $128−($128⋅0.50)=$64 Identify the mistake in the manager's calculation.