Răspuns :
a)
8000-7530=470
8650-8000=650
470+650=1120
R-s: 1120 albine din roiul salbatic
b)
balena albastra - 2/2
elefantul - 5t, 12 ori m/m decit 1/2 balena
R-e:
balena albastra = (5 * 12) * 2 = 120t
R-s: balena albastra = 120t
a) x+7530=y albinele din stup +cele salbatice)
y-8650=8000 albine ramase
---------------------------------------------------------------
x=? (albine salbatice au invadat stupul)
y=8000+8650
y=16650 albine (amestecate)
x=16650-7530
x=9120 albine (salbatice) au invadat stupul
b) b:2=e*12
e=5t
----------------
b=?
b:2=5*12
b:2=60t
b=60*2
b=120t
y-8650=8000 albine ramase
---------------------------------------------------------------
x=? (albine salbatice au invadat stupul)
y=8000+8650
y=16650 albine (amestecate)
x=16650-7530
x=9120 albine (salbatice) au invadat stupul
b) b:2=e*12
e=5t
----------------
b=?
b:2=5*12
b:2=60t
b=60*2
b=120t