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500 zł - 100%
1% - 5 zł
60/5 = 12
Odp. 12%
b) 1600-1200=400
1600 - 100%
16 - 1%
400/16=25
Odp. 25%
c) 5000-4500=500
5000 - 100%
4500 - x%
5000*x%=4500*100%
5000x=450000/5000
x=90
100%-90%=10%
Odp. O 10%
d) 40kg - 100%
56kg - x%
40x=56*100%
40x=5600%/40
x=140%
140%-100%=40%
Odp. O 40%