Răspuns :
p - pret cadou
60p/100+80=p
60p+8 000=100p
8000=100p-60p
8000=40p
p=8000:40
p=800:4
p=200
60p/100+80=p
60p+8 000=100p
8000=100p-60p
8000=40p
p=8000:40
p=800:4
p=200
x-pretul cadoului
60% din x= 60/100*x= 3/5*x= 3x/5 -a contribuit Andrei
x-3x/5= (5x-3x)/5= 2x/5-restul
2x/5=80
x=80*5/2
x=40*5
x=200
60% din x= 60/100*x= 3/5*x= 3x/5 -a contribuit Andrei
x-3x/5= (5x-3x)/5= 2x/5-restul
2x/5=80
x=80*5/2
x=40*5
x=200