Odpowiedź:
300kg-60kg=240kg
300kg-100%
240 - x%
240*100/300
x = 80%
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Odpowiedź:
300kg-60kg=240kg
300kg-100%
240 - x%
240*100/300
x = 80%
60kg-x
x=60•100:300=6000:300=20%