Znajdź liczbę której:
a)55% wynosi 6
b)18% wynosi 36
c)75% wynosi 180
d)45% wynosi 90
e)55% wynosi 11
f)180% wynosi 270
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a) 55% - 6
100% - x
6= 0.55x
x=10,9
b 18% - 36
100% - x
0.18 x = 36
x=200
75%- 180
100%- x
0.75x = 180
x= 240
45% - 90
100%- x
0.45x= 90
x=200
55%-11
100%-x
0.55x=11
x=20
180% -270
100%- x
1.8x=270
x=150
- to nie jest minus tylko to odpowiada np. 180% -(odpowiada) 270
a)55%=6
x=100%
x=6x100:55=10,90
x=10,90
b)18%=36
x=100%
x=36x100:18=200
x=200
c) 75%=180
x=100%
x=180x100:75=240
x=240
d)45%=90
x=100%
x=90x100:45=200
x=200
e)55%=11
x=100%
x=11x100:55=20
x=20
f) 180%=270
x=100%
x=270x100:180=150
x=150