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Odp.A
1ar=100m^2
23,5ar=2350m^2
3/5*2350m^2=3*470=1410m^2
Odp.C
1x-(0,65x+0,2x)=1x-0,85x=0,15x(łąki)
0,15x=96,75
3/20*x=96,75 /*20
3x=1935 /:3
x=645ha(całe gospodarstwo)
Odp.B