1. Employees of a discount appliance store receive an additional 20%
off of the lowest price on an item. If an employee purchases a
dishwasher during a 15% off sale, how much will he pay if the
dishwasher originally cost $450?

A. $280.90

B. $287

C. $292.50

D. $306

E. $333.89

4. The sales price of a car is $12,590, which is 20% off the original price. What is the original price?

A. $14,310.40

B. $14,990.90

C. $15,290.70

D. $15,737.50

E. $16,935.80

이 두문제인데요...제가  수학에는 젬병이라 하나도 모르겠네요...

자세한 설명 부탁드릴께요 미씨님들 ㅜㅠ

미리 감사드리구요, 꼭 새해에는 대박나세요~~~!!

감사합니다 :)