Răspunsuri

2014-02-08T17:32:11+02:00
Ziua 1: X/3
Ramas X - X/3 = 2X/3
Ziua 2: (2X/3)/4 = X/6
Ziua 3: 18
X/3 + X/6 + 18 = X
3X/6 + 18 = X
X/2 + 18 = X
X = 36 km

10 4 10
2014-02-08T17:33:44+02:00
X-lungimea drumului
aflam cat a parcurs in 1a zi
1/3*x=x/3
aflam restul de drum
x-x/3=3x-x supra 3=2x/3
aflam cat a parcurs in a2a zi
1/4 din 2x/3=x/6
x/3+x/6+18=x aducem la acelasi numitor
2x+x+108=6x
3x-6x=-108
-3x=-108
3x=108
x=36
9 4 9