problem 6 and 4 please

For how answer my question this will be the last question can you answer in math subject

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?

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39