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xe đó chở được số kg gạo là:
18*50+15*20 = 1200 (kg)
đổi: 1200 kg = 12 tạ
đáp số: 12 tạ gạo.
Khối lượng của 30 bao gạo tẻ là:
30 x 40 = 1200 ( kg )
Khối lượng của 40 bao gạo nếp là:
40 x 20 = 800 ( kg )
Đổi : 1200 kg = 1,2 tấn
800 kg = 0,8 tấn
Xe đó chở được số tấn gạo là:
1,2 + 0,8 = 2 ( tấn )
Đáp số : 2 tấn gạo
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Số kg gạo tẻ là:
30.40=1200 (kg)
Số gạo nếp là:
40.20=800 (kg)
Xe chở số tấn gạo là:
800+1200=2000(kg)
2000 kg=2 tấn
Đáp số : 2 tấn
mình chỉ biết câu 1 thôi :
lấy số bao gạo tẻ nhân với cân nặng của bao là 30 x 40 = 1200 kg.
sau đó ta cũng làm như cách kia là : 40 x 20 = 800 kg.
ta cộng 2 tích lại bằng : 1200 + 800 = 2000 kg
1.
30 bao gạo tẻ nặng số ki-lô-gam là :
40 x 30 = 1200 (kg)
40 bao gạo nếp nặng số ki-lô-gam là :
20 x 40 = 800 (kg)
Xe đó chở số gạo là :
1200 + 800 = 2000 (kg)
2000kg = 2 tấn
Đáp số : 2 tấn
2.
1 tạ 50kg = 150 kg
Sau khi bán đi 25kg mỗi loại thì hiệu số gạo vẫn không đổi .
Lúc đầu cửa hàng có số gạo tẻ là :
150 : (5-2) x 5 = 250 (kg)
Lúc đầu cửa hàng có số gạo nếp là :
250 - 150 = 100 (kg)
Đáp số : 250kg gạo tẻ
100kg gạo nếp
3.
a, \(\frac{41}{24}\)
b, \(\frac{194}{65}\)
Bài 3 mình ko chắc lắm.
Khối lượng của 30 bao gạo tẻ là:
30 x 40 = 1200 ( kg )
Khối lượng của 40 bao gạo nếp là:
40 x 20 = 800 ( kg )
Đổi : 1200 kg = 1,2 tấn
800 kg = 0,8 tấn
Xe đó chở được số tấn gạo là:
1,2 + 0,8 = 2 ( tấn )
Đáp số : 2 tấn gạo
Xe đó chở \(30\times40+40\times20=1200+800=2000\left(kg.gạo\right)=2\left(tấn.gạo\right)\)
Đổi: 2 tạ 50 kg = 2.5 tạ
Số gạo nếp xe chở là: 7/10 = 0.7 (tạ)
Số gạo tẻ xe chở là: 4/5 = 0.8 (tạ)
=> Số tạ ngô xe chở là: 2.5 - 0.8 - 0.7 = 1 (tạ)
7/10 tạ = 0,7 tạ
4/5 tạ = 8/10 tạ = 0,8 tạ
5 tạ 20 kg = 5,2 tạ
Số tạ ngô xe tải chở : 5,2 - (0,7 + 0,8) = 3,7 tạ
xe đó chở số kg gạo là:
(50x18)+20x15=1200(kg)
Đổi :1200kg=12 tấn
Đáp số:12 tấn
12 tấn nha bạn chúc bạn học giỏi
Cân nặng của 18 bao gạo tẻ là:
50 x 18 = 900 (kg) = 9 tạ
Cân nặng của 15 bao gạo nếp là:
20 x 15 = 300 (kg) = 3 tạ
Số gạo xe đó chở được là:
9 + 3 = 12 (tạ)
Đáp số: 12 tạ gạo
Xe đó chở được số kg gạo là:
50x18+20x15=1200(kg)
Đổi 1200kg =12 tạ
Vậy xe đó chở được 12 tạ gạo
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xe đó chở đuọc 12 tạ gạo nhé thấy đúng k cho mình nhé
Cân nặng của 18 bao gạo tẻ là:
50 x 18 = 900 (kg) = 9 tạ
Cân nặng của 15 bao gạo nếp là:
20 x 15 = 300 (kg) = 3 tạ
Số gạo xe đó chở được là:
9 + 3 = 12 (tạ)
18 bao gạo tẻ nặng :
50.18=900(kg)
15 bạo gạo nếp nặng :
20.15=300(kg)
Xe đó chở được:
900+300=1200(kg)
Đổi:1200kg=12 tạ
Đáp số:12 tạ