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0,8%-x
x=(0,8 *5) /100=4/100=0,04 kg
100%-5kg
4%-x
x=4 *5 /100=20/100=0,2 kg
100%-10 kg
x-0,24
x=100 *0,24 /10=24/1 0=2,4%
2,4%=24 promile