Răspuns :
intr-o zi ei consuma: 1/2+1,5+1= jum de paine+1 paine jumatate=2 paini+1=3 paini pe zi
intr-o saptamana= 3x7=21paini
intr-o saptamana= 3x7=21paini
1/2 + 1 intreg si 1/2 + 1 = > paini consuma doi frati pe zi
1 intreg si 1/2 = ( 1 x 2 + 1) / 2= 3/2
1 intreg = 2/2
1/2 + 3/2 + 2/2 = ( 1 + 3 + 2 ) / 2 = 6/2 = 3 paini consuma cei doi frati intr-o zi
o saptamana = 7 zile
7 x 3 = 21 paini consuma cei doi frati intr-o saptamana
1 intreg si 1/2 = ( 1 x 2 + 1) / 2= 3/2
1 intreg = 2/2
1/2 + 3/2 + 2/2 = ( 1 + 3 + 2 ) / 2 = 6/2 = 3 paini consuma cei doi frati intr-o zi
o saptamana = 7 zile
7 x 3 = 21 paini consuma cei doi frati intr-o saptamana