Question

Alin Radu si Mihai au cules impreuna 188 decastane.RADU a cules de doua ori mai multe decat Alina si cu 13 mai putine castanedecat Mihai.Cate castane a cules fiecare copil.

Answer 1

A+R+M=188  R=2XA  R=13-M  M=R+13   A -----

                                                                    R-----"------"

                                                                    M-----"------"--"

188-13=185  185:5(segmente)=35(A)

R=2xA=2x35=70    M=70+13=83