hai bao gạo cân nặng 91 kg. bao gạo tẻ nặng hơn bao gạo nếp 41 kg. tính khối lượng của mỗi bao.hai bao gạo nặng 91 kg, bao gạo tẻ nặng hơn bao gạo nếp 41kg.tính khối lượng của mỗi bao.
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9 tháng 11 2018
Tổng số kg gạo nếp và gạo tẻ trong kho là:
55x(125+75)= 11000(kg)
Lượng gạo còn lại trong kho là:
11000:4=2750(kg)
Số kg gạo nếp và gạo tẻ đã chuyển đi là:
11000 - 2750= 8250(kg)
Đáp số: 8250kg
22 tháng 2 2020
Gọi khối lượng bao gạo nếp là a, bao gạo tẻ là b (kg)
Ta có: a+b = 100
a - 2/3b = 15
=> (a+b) - (a-2/3b) = 5/3b = 100-15 = 85
=> b = 85 : 5/3 = 51
=> a = 100-51 = 49
Vậy ...
7 tháng 4 2019
Ta có sơ đồ:
Bao gạo nếp 5 phần
Bao gạo tẻ 8 phần
Sơ đồ cho ta thấy số gạo tẻ là:
15÷(8-5)×8=40(kg)
Số gạo nếp là:
40-15=25(kg)
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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31 tháng 1 2016
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
22 tháng 10 2017
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
22 tháng 10 2017
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.
Bao gạo nếp nặng số kg là :
(91 - 41) : 2 = 25 (kg)
Bao gạo tẻ nặng số kg là :
91 - 25 = 66 (kg)
Đáp số :........
#Math is easy !!!
Đáp số : 66 kg