Question

va rog sa ma ajutati la urmatoarea problema .                                                                             Alexandra , Andreea si Adi au impreuna 1600 de lei . Calculati ce suma are fiecare daca Andreea are cu 200 de lei mai mult decat Adi , iar Alexandra are cat Andreea si Adi la un loc .

Answer 1

 ALEXANDRA =A
ANDREEA=B
ADI=C
A+B+C=1600
C=B+200
A=B+C
B+B+200+B+B+200=1600
4B=1600-400
4B=1200
B=300
C=300+200
C=500
A=300+500
A=800

Answer 2

adi are un segment 
andreea are un segment +200
alexandra are doua segmente + 200

1600-(200+200)=1600-400=1200(4 segmente egale )
1200:4=300(lei are adi)
300+200=500(lei are andreea )
300+300+200=800(lei are alexandra) 
verificare: 800+500+300=1300+300=1600