Răspuns :
x=tot traseul
x/4 in prima zi
a doua zi 3x/4 *2/3 = x/2
a treia zi : (x-x/4 - x/2) /2= x/4 /2 = x/8
a patra zi x-x/4 -x/2 -x/8 = 60
x(8-2-4-1) = 60 * 8
x= 480 km
-------------------------------
x/4 in prima zi
a doua zi 3x/4 *2/3 = x/2
a treia zi : (x-x/4 - x/2) /2= x/4 /2 = x/8
a patra zi x-x/4 -x/2 -x/8 = 60
x(8-2-4-1) = 60 * 8
x= 480 km
-------------------------------