According to the meaning, the equation 0.3x+0.4y+1/70 (100-x-y) =10.
2. 1/7x+2.8/7y+ 10/7-0. 1/7x-0. 1/7y = 10
2/7x+2.7/7y=60/7
2x+2.7y=60
20x+27y=600
Y must be a multiple of 20 to make x an integer.
So y=20 x=3 100-x-y=77.
Answer 20 packets of rapeseed, 3 packets of tomato seeds and 77 packets of radish seeds.
I typed this hard. If there are any mistakes, please adopt them and make some modifications.