Evaluate. can someone me on this?

Astore has clearance items that have been marked down by 60%. they are having a sale, advertising an additional 55% off clearance items. what percent of the original price do you end up paying?

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?