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Function: driver
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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
아이코사
2019.04.01 05:18
조회 672
바보 수&학의 논리 오류 찾기 (난이도 하)
(이 문제는 과거 인터넷에 떠돌던 사진을 각색하였습니다)
수 : 나 엄마 아빠한테 500원씩 빌렸어
학 : 1000원 가지고 뭐했는데?
수 : 970원짜리 과자 사먹었어
학 : 그럼 남은 30원은?
수 : 엄마 아빠한테 10원씩 갚고 10원은 내가 가졌는데?
학 : 보자..... 그러면 너가 너희 부모님께 각각 490원씩 빚진 상태고, 그러면 490+490=980인데 거기에 10원을 더하면....
수 : 돈이 안 맞는데?
학 : 그러게????????? 너 돈 빼돌렸냐?
수 : 내가 그럴 이유가 뭐가 있어? 계산이 어디서 잘못된거지?
과연 10원은 어디로 숨어버린 걸까요?
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code
Lv.5
2019.04.01 06:39
총 수는 980원을 빚진 상태로 10원이 남아, 970원적자입니다.
그 돈으로는 과자를 사먹음.
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아이코사
Lv.2
2019.04.02 00:30
좋아요0
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무등산
Lv.1
2019.04.01 06:41
현금 유입: 부모님에게 처음에 빌린 돈: 1,000원
현금 유출: 과자 구매대금 970원, 부모님에게 20원 상환
현금 잔액: 10원
결론적으로, 부모님에게 현금 980원을 빌려서 970원으로 과자를 사고
10원이 현금으로 남았습니다.
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아이코사
Lv.2
2019.04.02 00:31
좋아요0
-
아이코사
Lv.2
2019.04.02 00:31
지금 바로
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