78:325*100%=<em>24%</em>
!!!!!!!!!!!!!!!!!!!!!!!!
1:10=0 ( ост.1 )
2:10=0 ( ост.2 )
3:10=0 ( ост.3 )
4:10=0 ( ост.4 )
5:10=0 ( ост.5 )
6:10=0 ( ост.6 )
7:10=0 ( ост.7 )
<span>8:10=0 ( ост.8 )
</span><span>9:10=0 ( ост.9 )</span>
0,7х+0,2х=3,528
0,9х=3,528
9х=35,28
х=35,28/9
х=3,92
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40=820