Răspuns:
Explicație pas cu pas:
D = distanta parcursa
prima zi 24D/100
rest D - 24D/100 = 100D/100 - 24D/100 = 76D/100
a doua zi 76D/100*25/100 = 19D/100
24D/100 + 19D/100 + 14 = D/2
43D/100 + 14 = 50D/100
50D/100 - 43D/100 = 14
7D/100 = 14
D = 14*100/7 = 200 km