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x-szukana liczba
120%*x=25
1,2x=25 /:1,2
x=250/12=125/6=20 i 5/6
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b) 100%+3%=103%
103%*60=1,03*60=61,8 ---------------------> odpowiedz
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c)100%-8%=92%
92%*7=0,92*7=6,44 ---------------------------> odpowiedz
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d) 5%*24=0,05*24=1,2 ---------------------------------> odpowiedz
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