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2014-06-25T14:58:36+03:00
20%-prima zi
100%-20%=80(restul)

 \frac{30}{100} x 80 = 240/10= 24 % (a doua zi)
100%-(20%+24%)=56%

56%............560
100%...........x km
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x=100x560/56 = 56000/56 = 1000 (lungimea. drumului)
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