Question

ajutor ex 14 repede va rog rapid urgent dau coroana

Answer 1

a = lungimea traseului 
I zi = a/4 
II zi = 1/2 ( a - a/4) = 1/2 x 3a/4 = 3a/8 
III zi = 1/4 ( 3a/4 - 3a/8) = 1/4 x 3a/8 = 3a/32 

a/4 +3a/8 + 3a/32 + 200 = a  /x32 
8a + 12a + 3a + 6400 = 32a 
6400 = 32a - 23a 
6400 = 9 a 
a = 6400 /9 
a = 711,(1) km  lungimea drumului 

I zi = > 6400/9 /4 = 6400 /36  = 177,(7) km 
II zi = > 6400/9 x 3/8 = 6400/24 = 266,(6) km
III zi = 6400/9 x 3/32 = 6400 /96 = 66,(6) km