Box of 36 rubber bands he used 1/4 of the rubber bands in the box how many rubber bands did use Pleas help

Icould really use some with this question.

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?

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?