"raisatav" - 1 õppematerjal

Noorte telefonikasutus

Tartu 2009 Sisukord 1 Sisukord...............................................................................................................................................................................................2 Sissejuhatus..........................................................................................................................................................................................3 1. Telefonide peale raisatav raha...............................................................................................................................................4 1.1.1 Keskmine kuu arve .....................................................................................................................................................4 .........................................................................................................................................................