December 2018 2 116 Report

Un autoturism a parcurs un traseu in doua zile. In prima zi autoturismul a parcurs 30% din lungimea traseului, iar in a doua zi autoturismul a parcurs restul de 350 km. Calculati lungimea intregului traseu. (Stiu ca raspunsul este 500, dar cum demonstrez?)
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