Question

In curte erau 63 de pasari, adica rate, gaste si gaini. Stiind ca ele puteau fi grupate astfel incat la o gasca sa corespunda 3 gaini, iar la doua gaste, o rata, aflati cate pasari de fiecare fel erau in acea curte.

Answer 1

Notam Rate=R, Gaste =S si Gaini = G

3S=G
2R=S => R=S/2
R+S+G=63
S/2+S+3S=63
S+2S+6S=126
9S=126
S=14 Gaste
G=3*14=42 Gaini
R=14/2=7 Rate