Răspuns :
1/4 x + 5/6 (x - 1/4 x) + 28 = x
1/4 x + 5/6 * 3/4 x + 28 = x
1/4 x + 5/8 x + 28 = x
7/8 x + 28 = x
1/8 x = 28
x = 224 km
1/4 x + 5/6 * 3/4 x + 28 = x
1/4 x + 5/8 x + 28 = x
7/8 x + 28 = x
1/8 x = 28
x = 224 km
notam drumul =X
I ZI=X/4
i-a mai ramas :X-X/4=(4X-X)/4=3X/4
A II A ZI=5/6x 3X/4=[simplificam 3 cu 6]
=5X/8
i-au mai ramas X-X/4-5X/8=28
(8X-2X-5X)/8=(28X8)/8 [inmultim totul cu 8]
X=224
I ZI=X/4
i-a mai ramas :X-X/4=(4X-X)/4=3X/4
A II A ZI=5/6x 3X/4=[simplificam 3 cu 6]
=5X/8
i-au mai ramas X-X/4-5X/8=28
(8X-2X-5X)/8=(28X8)/8 [inmultim totul cu 8]
X=224