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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] 할인율[비율]난이도: OOOO,노가다 50%
khr519
2020.07.28 02:04
조회 531
옷을 한벌 산다고 합시다
a가게에서는 원가가 10000원인 옷에 15%의 이윤을 붙여 정가를 정했습니다.
그리고 옷을 10벌 사면 10%를 할인해 줍니다
이중 9벌을 중*나라 에 팔면 한 벌당 10300원을 받을수 있습니다
b가게에서는 원가가 10000원인 (똑같은)옷에 20%의 이윤을 붙여 정가를 정했습니다.
그런데 10000원짜리 상품권을 같이사면 (옷사는데 사용가능)옷가격을 15% 할인해 줍니다.
어디서 어떻게 사는게 더 이득인가요?
풀이도 적어주시면 감사하겠습니다~
-
-
khr519
Lv.8
2020.07.31 06:39
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