Question

1.Ajutor:
Suma a cinci numere naturale pare consecutiveeste 40 aflati numerele

2. Daca la triprul unui numar aduna 40 obtinem 100.

Si 3. Daria are de 5 ori mai multi bani decat Mihai . inpreuna au 420 lei. Aflati ce suma are fiecare

Answer 1

n+n+2+n+4+n+6+n+8=40=> 5n=40-20=> n=20/5=> n=4,6,8,10,12

3a+40=100=. 3a=100-40=>a=60/3=> a=20

a+b=420=> b= Mihai a= Daria ; a=5*b=> 5b+b=420=> 6b=420=> b=420/6=> b=70 lei are M ihai=> Daria=a= 5*70=350 lei