Question

Un gospodar are :4bibilici cu 9 mai multe rate si-n rest gaini si curci . Stiind ca sunt 62 de pasari,cate gaini si cate curci exista ,daca gainile sunt de doua ori mai multe decat curci

Answer 1

cate rate sunt?
4+9=13
cate pasari raman ?
62-(13+4)=45
cate curci sunt?
g+c=45
g=2c
3c=45=>c=45:3=15 curci
cate gaini sunt?
2 x 15=30

verificare 4+13+15+30=62 pasari

Answer 2

b- bibilici r- rate g- gaini c-cuci b=4 r=9+4=13 b+r+g+c=62 g+c=62-(4+13)=62-17=45 g+c=45 g=2c 2c+c=3c=45 c=15 g=2×15=30