drumul intreg d = |---|---|---|---|---|---|---|---| (8/8)
ziua 1(parcurge) = |---|---|---|(3/8*d)
rest = |---|---|---|---|---|(5/8*d) din care:
ziua 2(parcurge) = |---|---|-|(5/16*d)
ramane 5/16 *d = 65km ⇒ d = 65*16:5=208 km
in primele 2 etape a parcurs ... 3/8 * 208 + 65 = 78+65 = 143 km