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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 100kg = 0,1 tấn ; 250kg = 0,25 tấn
Xe thứ hai chở được : 1,25 + 0,1 = 1,35 ( tấn )
Xe thứ ba chở được : 1,35 + 0,25 = 1,6 ( tấn )
a) Cả ba xe chở được : 1,25 + 1,35 + 1,6 = 3,6 ( tấn )
b) TB mỗi xe chở được : 3,6 : 3 = 1,2 ( tấn )
Đ/s:.....
ko sai đc :)))
Bài giải:
a) Xe 2 chở số tấn gạo là: 1,25 + 100=101,25 (tấn)
Xe 3 chở số tấn gạo là: 101,25 + 250=351,25 (tấn)
b) Trung bình mỗi xe chở số tấn gạo là: (1,25 + 101,25 +351,25):3=151,25(tấn)
Đáp số: a) 101,25 tấn gạo; 351,25 tấn gạo
b)151,25 tấn gạo
gấp rưỡi là gấp 1,5
xe thứ hai chở được số tấn gạo là :
4,7 + 0,5 = 5,2 ( tấn )
xe thứ ba chở được số tấn gạo là :
( 4,7 + 5,2 - 0,25 ) : 2 - 0,25 = 4,575 ( tấn )
đáp số : 4,575 tấn gạo
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)
cả 2 xe chở số tấn gạo là ( 1,25 + 0,75 + 0,05 + 0,25 ) = 2,3 tấn gạo