ko bít nhưng chắc 0 kg

Ta có : Số gạo lúc đầu là 7404 kg

           Số gạo sau khi bán là 7404 kg 

Suy ra ; Số gạo cửa hàng đã bán đi là :

                     7404-7404=0 (kg gạo)

                       Đáp số ;0 kg gạo

gọi số tiền mua 1 hộp bánh là : x đồng 

gọi số tiền mua 1 gói kẹo là : y đồng

vì mua 4 hộp bánh và 5 gói kẹo hết 172000 đồng nên : 4x + 5y = 172000 (1)

vì mua 4 hộp bánh và 8gói kẹo hết 208000 đồng nên : 4x + 8y = 208000 (2)

lấy (1) trừ (2) ta được : -3y = -36000

=> y=12000  ;    x = 28000

vậy .....

CR:150 CM

CD :450CM

đầy đủ nhé bạn

chán cóa kinh khủng

SLN Là 532 , SNN Là 235 Hiệu hai số là 532-235=297

số lớn nhất là :532

số bé nhất là : 235

hiệu : 532 - 235 = 297

dung 100%

15x3=45

15+45=60 

hỏi tào lao z má

XIX - IV   > XIV

VII + IX = XVI

XIX-IV < XIX

XII+IX = XVI

Giải

Lúc đầu cửa hàng có số kg gạo là :

( 20 + 20 ) x 2 = 80 ( kg )

Đáp số : 80 kg

Nếu không bán 20kg thì số gạo còn lại là : 20 + 20 = 40 (kg)

Lúc đầu cửa hàng có số gạo là : 40 x 2 = 80 (kg) 

Đáp số: 80kg

Viết số : 34546

Đọc số : Ba mươi tư nghìn năm trăm bốn mươi sáu

chịu thôi

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câu 1: 739

câu2:6295