Răspuns :
Prima zi - 235m+125m=360m
Prima si a doua zi - 235m+360m=595m
A treia zi - 875m-595m=280m
Verificare: 360m+235m+280m=875m
Prima si a doua zi - 235m+360m=595m
A treia zi - 875m-595m=280m
Verificare: 360m+235m+280m=875m