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Intr-o curte sunt rate si gaini.Gaini sunt de 4 ori mai multe decat rate in total 50 pasari.Cate pasari de fiecare fel sunt?
Va rog coronita


Răspuns :

r + g = 50
g = 4*r

r + 4*r = 50
5*r = 50
r = 50/5
r = 10 rate

g = 4*r
g = 4*10
g = 40 gaini
r-rate
g-gaini
r  ____
g ____  ____ ____ ____
50:5=10 rate
10x4=40 gaini