Question

alexandra andreea si adi au inpreuna 1600 de lei calculati ce summa are fie care daca andreea are cu 200 de lei mai mult decat adi iar alexandra are cat andreea si adi la un loc

Answer 1

Notam
Alexandra=a
Andreea=b
Adi=c
stim ca
a=c+200+c
b=c+200
atunci
a+b+c=1600
c+200+c+c+200+c=1600
4c=1600-400
4c=1200
c=1200:4
c=300
atunci
Alexandra=c+200+c=300+200+300=800
Andreea=c+200=300+200=500
Adi=300

800+500+300=1600