October 2018 1 16 Report

Kto rozwiąze mi zadanie na poziomie 1 klasy gim. na procentach?

Cene pewnego towaru podniesiono o 15% a nastepnie obnizono o 18%,Kwota wynosi teraz 471 zl i 50 gr.Oblicz pierwotna cene towaru oraz ile kosztowal towar po podwyzce .
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