Odpowiedź:
240g + 60g = 300 g
300g --- 100 %
60g --- x
300x = 100 * 60
x = 6000 : 300
x = 20%
Odp. C
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Odpowiedź:
240g + 60g = 300 g
300g --- 100 %
60g --- x
300x = 100 * 60
x = 6000 : 300
x = 20%
Odp. C