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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
17수락
2020.10.08 08:53
조회 481
수락이는 늪 지대에 도착했다
수락이가 가지고 있는 것은 다음과 같다
손전등: 시야 확보(문제 푸는데 영향을 끼치지 않음)
친구: 짐만 되는 친구
밧줄: 늪에 빠졌을때 대비용
땟목과 노: 늪에 빠지기 전 빨리 지나가기 위한 땟목
늪 지대의 길이는 200m이고 땟목의 속력은 분속 10m이다(늪 지대여서 느려요).
1분이 지날 때마다 땟목의 분속은 30%씩 떨어지고 만약 1.5이하가 되면 늪에 빠진다
이때 친구가 밧줄을 이용해 나를 살려줄 수 있는데 살리는데 20분이 걸린다.
나는 가는 길에 2/3를 왔는데 손전등을 놓고와서 다시 돌아와 다시1/3 지점에 도착했는데 노가 없어져 속력이 절반으로 줄었다
이때 최대 몃분 뒤에 수락은 늪 지대를 건널까?
지금 바로
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