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xe đó chở được số kg gạo là:
18*50+15*20 = 1200 (kg)
đổi: 1200 kg = 12 tạ
đáp số: 12 tạ gạo.
xe đó chở số kg gạo là:
(50x18)+20x15=1200(kg)
Đổi :1200kg=12 tấn
Đáp số:12 tấn
Số gạo nếp là: 50*35%=17.5 tạ
Số gạo tẻ là: 50-17.5=32.5 tạ
Đổi 32.5 tạ=3250 kg
so tui gao la x thi so tui nep cung la x
nhu vay khoi luong gao va nep la 15x+12x=945
=>so luong tui la x=35 tui
nhu vay khoi luong gao la 15*35=525kg
va khoi luong nep la 12*35=420kg
7/10 tạ = 0,7 tạ
4/5 tạ =0,8 tạ
2 tạ 50 kg = 2,05 tạ
Xe đó chở được số tạ ngô là :
2,05 - 0,7 - 0,8 = 0,55 (tạ)
Đáp số : 0,55 tạ
Mình sửa lại chút nha !
Đổi : 7/10 tạ = 0,7 tạ
4/5 tạ = 0,8 tạ
2 tạ 50 kg = 2,5 tạ
Xe đó chở đc số tạ ngô là :
2,5 - (0,7+0,8) = 1 (tạ)
Đáp số : 1 tạ
Sory bạn,Mình làm lộn ở chỗ đổi 2 tạ 50 kg nha !!!
Lời giải:
Số gạo tẻ chiếm: $100-40=60$ (% tổng số gạo)
Số gạo tẻ là: $500\times 60:100=300$ (tạ)
Đổi $300$ tạ thành $30$ tấn thì cửa hàng có $30$ tấn gạo tẻ
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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Ô tô chở số gạo nếp :
35x40%=14(tạ)
Ô tô đó chở số gạo tẻ :
35-14=21(tạ)
Đ/s:.......
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