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a)25
b)42
c)14
d)6
e)2
f)4,2
g)1,4
h)0,6
2
a)200
b)39
c)6
d)7,5
e)63
f)1176
2.Oblicz a).40% liczby 500=50*4=200 b). 30% liczby 130=13*3=39 c).5% liczby 120=12:2=6 d).15% liczby 50=5+2,5=7,5 e).35% liczby 180=3*18+18:2=54+9=63 f). 98% liczby 1200=1%=12=1200-12*2=1200-24=1176
b.10/100*420=42
c.10/100*140=14
d.10/100*60=6
e.10/100*20=2
f.10/100*42=4,2
g.10*100/14=1,4
h.10/100*6=0,6
2.a.40/100*500=200
b.30/100*130=39
c.5/100*120=6
d.15/100*50=7,5
e.35/100*180=63
f.98/100*1200=1178