Răspuns :
|___|___|___|___|___|___|___| prima etapa; |___| a doua etapa |___|___|___|___|___|___|___|---| 1250-50=1200; 1200:15=80 km in a doua etapa. 7x80=560 km in prima etapa si 560+50=610 km in a treia etapa PRoba 560+80+610=1250