số kg gạo tẻ là

50.240=12000kg

số kg gạo nếp là

40.240=9600kg

TB 1 thuyền chở là

(*12000+9600):6=3600kg

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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Xe đó chở số tấn gạo là:

(30×40)+(40×20)=2000(kg)=2(tấn)

                              Đáp số: 2 tấn

Đáp án A

2000  kg  k nhaaa cam on nhieu

20 bao gạo tẻ cân nặng là

50x20=1000 kg

40 bao gạo nếp cân nặng là

25x40=1000 kg

xe đó chở số tấn là

1000+1000=2000 kg

đáp số : 2000 kg

chúc bạn học giỏi hơn 

tk mình nha

xe đó chở bao gaọ  tẻ hết số tấn là:50 * 20=1000(kg)=1 tấn

xe đó chở số tấn gạo nếp là:25*40=1000(kg)=1 tấn

 xe đó chở tất cả số tấn gạo là:1+1=2(tấn)

                                              Đáp số:2 tấn

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

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

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.

mốt làm ơn cho đề ít giùm cái T~T 

1 : 30 bao gạo tẻ cân nặng :

40 x 30 = 1200 ( kg )

40 bao gạo nếp cân nặng :

20 x 40 = 800 ( kg )

30 bao gạo tẻ và 40 bao gạo nếp cân nặng ;

1200 + 800 = 2000 9 kg )

2000 kg = 2 tấn

ĐS:...

khối lượng của xe đó là 2600kg nha 

nhớ nhé

20 bao gao nep can nang so kg la:

  20x45=900(kg)

20 bao gao te can nang so kg la:

   20x40=800(kg)

Xe do can nang so kg la:

  900+800=1700(kg)

                D/S:1700 kg

 Xe đó chở được tất cả :

   ( 45 . 20 ) + ( 40 . 40 ) = 2500 ( kg ) 

đ/s : ...

Nếu bạn không làm gộp bạn có thể tách ra làm 3 lời giải 

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