Question

luiza numara vietatile din curtea bunicului. rate,gaini,si porci in total 67de capete si 148 de picioare.stiind ca nr ratelor este cat o treime din nr gainilor, afla cate gaini si cati porci are bunicul

Answer 1

67x2=134
148-134=14
14:2=7 porci
67-7=60 pasari
g=3r
3r+r=4r
4r=60
r=60:4=15 rate
gaini=60-15=45
verificare
7+15+45=67
7x4+60x2=148

Answer 2

r+g+p=67
2r+2g+4p=148
r=g:3=>g=3r

2r+2g+2p+2p=148
2x67+2p=148
2p=148-134
2p=14
p=7

r+g+p=67
r+g+7=67
=>r+g=60
g=3r
r+3r=60
4r=60
r=15
g=3x15
g=45