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xe đó chở số kg gạo là:
(50x18)+20x15=1200(kg)
Đổi :1200kg=12 tấn
Đáp số:12 tấn
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 \(30\times40+40\times20=1200+800=2000\left(kg.gạo\right)=2\left(tấn.gạo\right)\)
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
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)
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.
a) 30 bao gạo tẻ cân nặng 30 x 40 =1200 (kg)
40 bao gạo nếp cân nặng 40 x 20 = 800 (kg)
Khối lượng gạo xe đó chở là 1200 + 800 = 2000 (kg)
Đổi 2000kg = 2 tấn
b) Đổi 13km500m = 13500m
Hiệu số phần bằng nhau là 5 - 2 = 3 (phần)
Độ dài đoạn đường AC là 13500 : 3 x 2 = 9000 (m)
Độ dài đoạn đường CB là 13500 + 9000 = 22500 (m)
Độ dài đoạn đường AB là 9000 + 22500 = 31500 (m)
a) 30 bao gạo tẻ cân nặng 30 x 40 =1200 (kg)
40 bao gạo nếp cân nặng 40 x 20 = 800 (kg)
Khối lượng gạo xe đó chở là 1200 + 800 = 2000 (kg)
Đổi 2000kg = 2 tấn
b) Đổi 13km500m = 13500m
Hiệu số phần bằng nhau là 5 - 2 = 3 (phần)
Độ dài đoạn đường AC là 13500 : 3 x 2 = 9000 (m)
Độ dài đoạn đường CB là 13500 + 9000 = 22500 (m)
Độ dài đoạn đường AB là 9000 + 22500 = 31500 (m)
Đổi 2 tạ 50kg=250kg \(\frac{7}{10}\)tạ= 70 kg \(\frac{4}{5}\)tạ= 80 kg
Xe đó chở số ngô là:
250-70-80=100(kg)
Đổi 100kg= 1 tạ
Đáp số: 1 tạ ngô
tk nhé
xe đó chở được số kg gạo là:
18*50+15*20 = 1200 (kg)
đổi: 1200 kg = 12 tạ
đáp số: 12 tạ gạo.
Đáp án là 12 tạ gạo nha bạn.