Răspuns:
Explicație pas cu pas:
2a = 5b = 16c
a = 5b/2
c = 5b/16
a + b + c = 610
5b/2 + b + 5b/16 = 610
40b/16 + 16b/16 + 5b/16 = 610
61b/16 = 610
b = 16*610/61 = 160
a = 5*160/2 = 400
c = 5*160/16 = 50
_________________________
12 muncitori ...................9 zile
1 muncitor ......................12*9 = 108 zile
18 muncitori ...............108 : 18 = 6 zile