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Function: driver
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Cacher.php
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Function: initiateCache
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/controllers/ver3/Contents.php
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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: _error_handler
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: model
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Common.php
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Function: getFloatingMyInfo
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Line: 559
Function: get_footer
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/index.php
Line: 315
Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
수학여행을 가고 있다. 칼같은 국어 선생님은 지각생은 걸어오도록 했다.
승용차로 선생님과 학생들이 출발한 동시에 운동장에 도착한 지각생들도 목적지를 향해 걷기 시작했다. (동시에 출발했다는 말)
도중에 동정심이 생긴 수학 선생님은 운동장에서 x km 떨어진 P 지점에서 모두 내리라고 한 뒤 자기 혼자 승용차를 타고 학교에서 y km 떨어진 Q 지점으로 되돌아와 지각생들을 태웠고, 수학선생님과 지각생들을 제외한 사람들은 P지점부터 걸어서 목적지까지 갔다.
그런데 놀랍게도 지각생 팀과 국어 선생님 팀이 동시에 운동장에서 20km 떨어진 목적지에 도착했다.
선생님과 학생은 모두 걷는 속력이 시속 4km이고 자동차는 항상 일정하게 시속 40km로 부릉부릉 열심히 달린다.
P지점과 Q지점은 학교에서 각각 얼마나 떨어져 있는가?
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21세기오일러
Lv.11
2019.11.24 20:11
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