Răspuns:
408
Explicație pas cu pas:
prima zi = jumătate
a doua zi = o treime
a treia zi = 68
total = 1/2 total + 1/3 total + 68
68 = total - 1/2total- 1/3 total
68 = total - 3/6 total - 2/6 total
68 = total -5/6 total
68 = 6/6total -5/6 total
68 = 1/6 total
total = 68 × 6
total = 408
prima zi 204
a doua zi 136
a treia zi 68
total 408
