hope all is well during this time, well working on this assignment I had difficulty understanding this concept

6. The menswear department received 30 navy-checked neckties that retail for 5120. There] are 35 of the same style of necktie from last year on display with a retail price of $100. The buyer has initiated an additional markup dollar on the older neckties to avoid any confusion for customers. Calculate the additional markup % on the older neckties. (All ties were sold at the new price point.) 7. Nordstrom's gives a special customer discount to their loyalty customers. If a loyalty customer purchases a leather jacket that retails for $1,200 and the special customer discount is 10%, how much are they charged for the jacket? 8. A buyer received 38 jeans for a fall promotion. After the promotion, there were 12 jeans left on hand. What was the percent sell-through of the jeans during the promotion