I +II +III = 65 pagini
II = 2×I
II = III-5 => III = II+5
I |____|
II |____|____|
III |____|____|+5
Avem 5 segmente egale +5 = 65
65-5 = 60
60 : 5 = 12 ( un segment)
I = 12
II = 2×12 = 24
III = 2×12+5 = 24+5 = 29
Verificare:
12 +24 +29 = 65
12 pagini in prima zi
24 pagini in a 2-a zi
29 pagini in a 3-a zi