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Giải
Số ki-lô-gam đường bán được ngày 1 là:
40 . 2 : ( 3+5 ) . 3 = 30 (kg)
Số ki-lô-gam đường bán được ngày 2 là:
40 . 2 - 30 = 50 (kg)
Đ/s:......
Kick mk nha bn!
tổng số kg đường cả hai ngày cửa hàng đó bán đc là:
40.2=80(kg)
nếu số đường bán đc ngày thứ nhất là 3 phần thì số đường bán đc ngày thứ hai là 5 phần,như vậy số đường bán đc ngày thứ nhất là:
80:(3+5).3=30 (kg)
số đường bán đc ngày thứ hai là:
80-30=50 (kg)
đs..............
Bài giải
Ngày thứ hai cửa hàng đó bán được là :
30 : 6 = 5 ( kg )
Ngày thứ ba cửa hàng đó bán được là :
( 30 + 5 ) : 2 = 17,5 ( kg )
Cả ba ngày cửa hàng đó bán được là :
30 + 5 + 17,5 = 52,5 ( kg )
Đáp số : 52,5 kg đường
Ai ấn đúng cho mình ấn lại ,gửi qua tin nhắn và kết bạn nhé ! ^-^
Trung bình một ngày cửa hàng bán được là :
\(\left(\frac{13}{20}+\frac{39}{40}+\frac{7}{10}\right):3=\frac{31}{40}\text{ tấn gạo }=775kg\)
Vậy trung bình một ngày cửa hàng bán được 775 kg gạo
Gọi số đường bán trong ngày 1 là a, ngày 2 là b, ta có a= 3/5 b
Tổng số đường bán trong 2 ngày là
40 x 2 = 80 kg
a + b = 80
3/5b + b = 80
3b +5b = 80 x 5 = 400
8b = 400
b =50 kg
a = 80 - 50 = 30 kg
Số đường bán trong ngày 1 là 30 kg
Số đường bán trong ngày 2 là 50 kg
Tổng số đường cửa hàng đó bán được trong 2 ngày là :
40.2 = 80 ( kg )
Ta có sơ đồ :
Số đường bán được trong ngày 1 !__!__!__! Tổng : 80 kg
Số đường bán được trong ngày 2 !__!__!__!__!__!
Số đường cửa hàng đó bán được trong ngày 1 là :
80 : ( 3 + 5 ) . 3 = 30 ( kg )
Số đường cửa hàng đó bán được trong ngày 2 là :
80 - 30 = 50 ( kg )
Đáp số : Ngày 1 : 30 kg đường .
Ngày 2 : 50 kg đường .
1 tấn = 1000 kg
Ngày thứ hai bán được : 300 x 2 = 600 (kg)
Hai ngày đầu bán được : 300 + 600 = 900 (kg)
Ngày thứ ba bán được : 1000 - 900 = 100 (kg)
Đáp số: 100kg đường.
Giải
1 tấn = 1000 kg
Ngày thứ hai bán được : 300 x 2 = 600 (kg)
Hai ngày đầu bán được : 300 + 600 = 900 (kg)
Ngày thứ ba bán được : 1000 – 900 = 100 (kg)
Đáp số: 100kg đường.
^HT^
tổng số gạo của hàng bán được là :
\(\frac{43}{25}+\frac{54}{25}+\frac{56}{25}=\frac{153}{25}\text{ tấn}\)
trung bình khối lượng gạo bán ra là :
\(\frac{153}{25}:3=\frac{51}{25}\text{ tấn =}204kg\)
Trong ba ngày, cửa hàng bán được số đường là:
4 × 3 = 12 (tạ)
Đổi 12 tạ = 1200kg
Ngày thứ hai cửa hàng bán được số ki-lô-gam đường là:
468 : 100 × 75 = 351 ( k g )
Ngày thứ ba cửa hàng bán số ki-lô-gam đường là:
1200 − ( 468 + 351 ) = 381 ( k g )
Đáp số: 381kg đường.
Vậy đáp án đúng điền vào ô trống là 381.