x=suma de bani
x/4 = cheltuiala 1
x-x/4=3x/4=rest
3x/4 × 1/6 =x/8=cheltuiala 2
3x/4-x/8=5x/8=rest
5x/8 ×1/3+120=5x/24+120=cheltuiala 3
x/4+x/8+5x/24+120+600=x
x/4+x/8+5x/24+720=x
6x+3x+5x+17280=24x
14x+17280=24x
10x=17280
x=1728 lei
2. x= distanta x/1 X 7/20 = 7x/20 (rest) 2X7x/20+624=x 7x/ 10 +624=x 7x+6240=10 x -3x=6240 (se imparte la -3) x=2080
