Question

Problema 3, punctul b

Answer 1

x - lungimea  drumului
I zi = x/3
II zi = 1/3 (x - x/3) +16 =1 /3 x 2x/3 +16 = 2x/9 +16
x/3 + 2x/9 + 16 +36 = x
x/3 + 2x/9 + 52 = x      /x9
3x + 2x + 468 = 9x
5x + 468 =9x
468 = 9x - 5x
468 = 4x
x= 468 : 4
x=117 

Drumul are 117 km 

I zi a parcurs:        117 x 1/3 = 39 km
a II zi a parcurs:     2 x 117/9 +16 = 26 +16 = 42 km

39/42  = aprox. 0,9285  =  92,85%