Răspunsuri

  • Utilizator Brainly
2014-02-25T19:47:54+02:00
3 probleme........20%
x probleme........100%
x=3·100/20=15 probleme.
2014-02-25T19:52:27+02:00
20/100ori x=3
20x/100=3/1
20x=300
x=300/20
x=15probleme