Question

Trei copii,Andrei,Barbu si Calin, au impreuna 22 de mere. Aflati cate mere are fiecare dintre ei,stiind ca Barbu are de doua ori mai multe mere decat Andrei, iar Calin are cu 3 mere mai putin decat Barbu.

Answer 1

x  mere are Andrei
2x  mere are Barbu
2x-3 mere are Cali
x+2x+3x -3 =22⇒5x=25⇒x=5
5 mere Andrei
10 mere Barbu
7 mere Calin

Answer 2

x  mere are Andrei
2x  mere are Barbu
2x-3 mere are Cali
x+2x+3x -3 =22⇒5x=25⇒x=5
5 mere Andrei
10 mere Barbu
7 mere Calin......................................................................