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24 tháng 1 2022
đổi 5 yến = 50 kg
trung bình mỗi bao gạo cân nặng số ki lô gam là
(50+45+25) : 3 = 40 ( kg )
đ/s:40 kg
6 tháng 8 2017
Xe thứ nhất chở số kg gạo là:
5x80=400(kg)
Xe thứ hai chở số kg gạo là:
3x96=288(kg)
Trung bình mỗi xe chở số kg gạo là:
(400+288):2=344(kg)
b,Cả hai xe chở số bao gạo la:
5+3=8(bao)
Trung bình mỗi bao gạo nặng số kg là:
688:8=86(kg)
19 tháng 11 2017
đặt kl bao thứ 3 là a(kg) rồi vận dụng tính chất dãy tỉ số bằng nhau để giải.
12 tháng 7 2023
Bao thứ ba nặng:
125-78=47kg
Bao 1 nặng: 125-87,5=37,5kg
Bao 2 nặng:
125-47-37,5=40,5kg
2 tháng 4 2015
Số kg gạo tẻ là:
50 x 32 = 1600 (kg)
Số kg gạo nếp là:
59 x 45 = 2655 (kg)
Vậy có tổng cộng:
1600 + 2655 = 4255(kg) = 4,255 tấn
ĐS: 4,255 tấn
19 tháng 11 2020
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
8 tháng 10 2022
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TB mỗi bao nặng số ki lô gam là :
148,5 : 3 = 49 ,5