Question

Cinci baieti si patru fete au cules impreuna 345 kg de struguri . Aflati ce cantitate de struguri a cules un baiat stiind ca 2 fetite au cules impreuna 60kg de struguri. Cu intrebari daca se poate

Answer 1

5b+4f=345kg
2f=60kg
cat a cules o fata?
60kg:2=30kg

cat a cules un baiat?
5xb+4x30kg=345kg
5xb+120kg=345kg
5xb=345kg-120kg
5xb=225kg
b=225kf:5
b=45kg 

verificare
5x45+4x30=345
225+120=345

Answer 2

daca  2 fete aduna 60   4 aduna   120   345-120 =225  225:5=45 kg