Question

in ecursionist a parcurs in prima zi 1/7 din drum pe care in avea de facut a doua zi 2/3din ce is RAMAS a tries zi 3/8 dim nou rest iar in a 4 a zi restul de 40 km cati km a parcurs in fiecare zi​

Answer 1

Răspuns:

x-lungimea drumului

1 zi: x/7

x - x/7 = 6x/7 restul dupa prima zi

2 zi: 2/3 x 6x/7 = 12x/21 = 4x/7

6x/7 - 4x/7 = 2x/7 noul rest

3 zi: 3/8 x 2x/7 = 6x/56 = 3x/28

x= x/7 + 4x/7 + 3x/28 + 40

28x = 4x + 16x + 3x + 40*28

28x = 23x + 40 * 28

28x - 23x = 40*28

5x = 1120

x = 224 km

1 zi: 32 km

2 zi: 128 km

3 zi : 24 km