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1000 g = 1 kg
Ukladamy proporcje.
120 g -------- 2.99
1000 g ------- x
120x= 2990
x ≈ 24.92 zł za kg
zadanie 2
1000 g = 1 kg
Ukladamy proporcje.
300 g ------- 1.38
1000 g ---------- x
300x = 1380
x = 4.6 zł za 1 kg
zadanie 3
1000 g = 1 kg
Ukladamy proprocje.
250 g ----------- 4.68
1000 g ---------- x
250x = 4680
x = 18.72 zl za 1 kg
2,99zl,120g=0,02492zl/ 1g
0,02492zl*1000=24,92zl/ 1kg
2.
1,38zl:300g=0,046zl/ 1g
1000*0,046zl=4,6zl
3.
4*4,68zl=18,72zl/1 kg