쑥쑥몰
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학교에서 word problems 문제를 받아왔는데 제가 풀기에 벅차서 도움을 요청합니다..
옆에서 헉헉대고 있으니 울딸도 안쓰러운지 됐다고 하는데 오기가 생기더군요. 몇개는 겨우 원시적으로 풀었는데 이것 두개는 도통 ....
문제 올립니다..
문제가 좋다고 생각되시면 다 올려볼께요.
1. Offspring
Jolly Roger's son has the same number of brothers as he has sisters. Each of Jolly Roger's daughters has twice as many brothers as she has sisters.
How many sons and daughters does Jolly Roger have?
2. Festive celebrations
To celebrate her discovery of hidden treasure, Blaze invited her fellow pirates and buccaneers to a feast at her hideout. The first pirates arrived in a group of 3, the next pirates arrived in a group of 5,
and the next pirates arrived in a group of 7. Each group of pirates who arrived was two more in total than the previous group. After the tenth group arrived, Blaze closed the door to the hideout.
How many guests were at the feast?
마루이 
이웃집 부모와 아이 두번째
수학 2문제 도움이 필요합니다.
최신
이전
와옹~~
이게 초2문제라구용??
어렵당...
전 아래 설명보고 알았네요...
부끄부끄^^;