Question

6becuri mici si 6 becuri mari consuma intr-o zi 60 de kilowati (kw). In alta zi 6 becuri mici si 12 becuri mari consuma 96 de kilowati.
Cati kilowati consuma intr-o zi un bec mic si cati un bec mare?

Answer 1

6b + 6B = 60 => 6b = 60 - 6B
6b + 12B = 96
______________________________

60 - 6B + 12B = 96
6B = 96 - 60
6B = 36
B = 6
6b = 60 - 36
6b = 24
b = 4

Answer 2

96-60=36 kw.36kw:6=6kw consuma un bec mare!...........60 -36=24 kw consuma 6 becuri mici!24:6=4kw. consuma un bec mic!Concret:...a)un bec mic consuma intr-o zi 4 kw!....b)Un bec mare consuma 6 kw pe zi!Sper ca te-am putut ajuta!O dupa-amiaza placuta!