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File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Cacher.php
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Function: driver
File: /volume1/web/PhpstormProjects/www_polymath_co_kr/application/libraries/Cacher.php
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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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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.
[창의 퍼즐] 소금물에 속음 - feat 은총알
물이 들어갈 수 있는 만큼 최대한 들어간 페트병이 있다. 이 페트병은 최대 500g의 물이 들어갈 수 있다. 그런데 여기에 소금이 쏟아져 8%의 소금물의 되었다.
문제 1. 이 페트병에 들어간 소금만큼의 물의 양을 옆의 비커에 모두 옮긴다음 소금 400g을 넣었다면 그 물의 농도는?
문제 2. (문제 1에 이어서)그런데 비커에 구멍이 뚤려서(?) 물이 30g이 새어 나갔다면(소금도 함께) 남은 물의 농도와 빠져나간 물의 농도를 구하여라.
(풀이 필수)
-
은총알
Lv.11
2020.03.26 08:57
지금 바로
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