Question

Un taran are gaini si oi,in total 77 de capete si 184 de picioare.Cate oi si cate gaini are taranul? ofer coroana

Answer 1

184:2=92 ; 92-77= 15
15*4= 60p....15c  (oi)
184-60=124p (ramase)
124:2= 62 c ( gaini)

R:
15 oi
62 gaini

15+62=77 capete
15*4+62*2=60+124=184 picioare

Sau altfel:
o+g=77
2g+4o=184

o=77-g
2g+4*(77-g)=184
2g+308-4g=184
-2g=184-308
-2g= -124
g= -124 : -2
g= 62

o+g=77
o=77-62
o=15