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수학동아 - 폴리매스
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함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
[창의 퍼즐] 꽃잎퍼즐
MathlabJ 2020.04.20 19:24 조회 647
문제 푼 사람 3명
공유하기
페이스북 트위터 카카오톡 카카오스토리 네이버블로그 네이버밴드

J는 꽃다발을 받았다.

 

꽃다발에 있는 꽃잎중 반은 말려서 책갈피를 만들기로 했다.

 

그리고 남은 꽃잎중 1/3은 편지에 붙여서 엽서를 만들고, 남은 꽃잎중 6개를 동생에게 주기로 했다.

 

그랬더니 남은 꽃잎은 18개였다.

 

꽃다발에 있는 모든 꽃은 꽃잎이 4개라고 할때,

 

처음 꽃다발에 있던 꽃은 몇송이일까?

이 문제 어떠셨나요?

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