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Nữa chu vi bức tranh :
16,8 : 2 = 8,4 ( m )
Chiều dài bức tranh :
( 8,4 + 3,2 ) : 2 = 5,8 ( m )
Chiều rộng bức tranh :
5,8 - 3,2 = 2,6 ( m )
Diện tích bức tranh :
5,8 x 2,6 = 15,08 ( m2 )
Dùng hết số giấy màu :
15,08 : 1 x 0,75 = 11,31 ( kg )
đ/s : 11,31 kg
11,31 là đúng đấy 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Câu trả lời đây:
Yến vui đến nhà Sơn chơi
Nói năng nhiều quà, tung toàn tin vui
Lúc về Sơn nói bái bai
Yến thông minh đố Sơn ngay tức thì
Từ câu nói của cậu ra
Đố cậu quê tớ ở trong tỉnh nào
Thông minh Sơn liền đáp ngay
Dễ lắm,tớ giải luôn đây Yến à
Bai Yến là thành Yên Bái
Yến nghe thấy thế, Yến liền phục lăn.
Ta có: Bai yến = yên bái
=> quê của Yến ở Yên Bái
ủng hộ nhé


20%=1/5
3 học sinh chiếm:
1/5-1/8 = 3/40( số học sinh cả lớp)
Số học sinh lớp 5A là:
3:3/40 = 40( học sinh)
Đáp số: 40 học sinh

Coi số học sinh nam là 10 phần bằng nhau thì số học sinh nữ là 11 phần
Số học sinh nữa dư thi là :
168 : ( 10 + 11 ) x 11 = 88 ( em )
Đáp số : 88 em
Coi số hs nam là 10 phần, hs nữ là 11 phần
Huyện đó có số bạn nữ dự thi là :
168 : ( 10 + 11 ) * 11 = 88 hs
Đ/S: 88 hs