Question

ionel are de 5 ori mai multi bani decit mihai.inpreuna au 420 lei. aflati ce suma are fiecare dintre ei..........prin ecuatii..........dau coroana

Answer 1

x-nr de bani pe care ii are Ionel

y-nr de bani pe care ii are Mihai

1) x=5y

2) x+y=420

Inlocuim ecuatia 1 in ecuatia 2 si rezulta

5y+y=420

6y=420

y=420/6

y=70

Am aflat ca Mihai are 70 de lei.

x=5*y=5*70=350lei

Am aflat ca Ionel are 350 de lei.

Answer 2

i= Ionel
m= Mihai

i+m= 420
i= 5m
5m+m= 420
6m= 420
m= 420/6
m= 70
i= 5m= 5•70= 350

Mihai are 70 lei, Ionel are 350 lei