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10 kg - 100 %
x - 3%
x=10 kg x 3 % : 100 % = 0,3 kg
zad.2.2
V= 120 km/h = 0,03 km/s
t = 10 s
a= 0,03 km/s : 10 s= 0,003 km/s
zad.2.3
v1= 5 km/h
v2= 33,33 m/s = 120 km/ h
120 km/h : 5 km/h= 24
zad.2.4
4,8l= 4800 cm³
4800cm³ : 25 cm³=192
zad.2.5
480 zł - 100 %
14,4 zł - x
x = 14,4 x 100 % : 480 = 3 %
zad.2.6
1 : 2000
zad.2.7
60 + 40m³ + 70m³ + 80m³ + 80m³ + 70 m³= 400m³
400m³ : 6 = 66,66 m³
66,66m³ : 60 = 1,11 m³
zad.2.8
50 km² - 2500 świątyń
2 km² - x świątyń
x= 2km² x 2500 : 50km²
x=100