Odpowiedź:
-
Szczegółowe wyjaśnienie:
a)
70kg-100%
x-30%
70*30=100x
2100=100x/:100
21=x
b)
400zł-100%
x-60%
400*60=100*x
24000=100x/:100
240=x
c)
40 dm²=100%
x-5%
40*5=100*x
200=100x/:100
2=x
d)
220zl-100%
x-20%
220*20=100*x
4400=100x/:100
44=x
220zl+44zl=264
e)
240-100%
x-90%
21600=100x/:100
216=x
f)
1200m²=100%
x=80%
96000=100x/:100
960=x
kckckcckck xd
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Odpowiedź:
-
Szczegółowe wyjaśnienie:
a)
70kg-100%
x-30%
70*30=100x
2100=100x/:100
21=x
b)
400zł-100%
x-60%
400*60=100*x
24000=100x/:100
240=x
c)
40 dm²=100%
x-5%
40*5=100*x
200=100x/:100
2=x
d)
220zl-100%
x-20%
220*20=100*x
4400=100x/:100
44=x
220zl+44zl=264
e)
240-100%
x-90%
21600=100x/:100
216=x
f)
1200m²=100%
x=80%
96000=100x/:100
960=x
kckckcckck xd