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Primena proporcija-procenti
1. Cena robe je povećana sa 140 din. Na 161 din. Koliko procenata iznosi povećanje?
2. Posle sniženja cene od 8% cena nekog proizvoda je 276 din. Kolika je bila cena pre sniženja?
3. Posle poskupljenja od 8% cena nekog proizvoda je 324 din. Kolika je cena pre poskupljenja?
4. Pri sušenju robe koja je bila teška 3800 kg težina se smanjila za 456 kg.Koliko je to u procentima?
5. Pri sušenju neka roba izgubi 72% od svoje mase. Koliko treba sveže robe da bi se dobilo 56 kg
sušene?
6. U jednoj školi je 400 učenika u junu je sa uspehom završilo 95% učenika, od toga 15% sa odličnim
uspehom. Koliko ima odličnih učenika?
7. Posle poskupljenja od 20% cena robe je 90 din. Koliko je iznosila cene te robe pre poskupljenja?
8. Od 120 kg voća 25% je trulo. Koliko kg voća je za upotrebu?
9. Na šahovskom turniru 64% učenika se kvalifikovalo za dalje takmičenje. Koliko je takmičara
učestvovalo na turniru ako se 18 nije kvalifikovalo za dalje takmičenje?
10. U 220g vode sipano 20 g limunovog soka i 10 g šećera, odredi procenat limunovog soka u
mešavini?

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Primena proporcija-procenti.docx

  • 1. Primena proporcija-procenti 1. Cena robe je povećana sa 140 din. Na 161 din. Koliko procenata iznosi povećanje? 2. Posle sniženja cene od 8% cena nekog proizvoda je 276 din. Kolika je bila cena pre sniženja? 3. Posle poskupljenja od 8% cena nekog proizvoda je 324 din. Kolika je cena pre poskupljenja? 4. Pri sušenju robe koja je bila teška 3800 kg težina se smanjila za 456 kg.Koliko je to u procentima? 5. Pri sušenju neka roba izgubi 72% od svoje mase. Koliko treba sveže robe da bi se dobilo 56 kg sušene? 6. U jednoj školi je 400 učenika u junu je sa uspehom završilo 95% učenika, od toga 15% sa odličnim uspehom. Koliko ima odličnih učenika? 7. Posle poskupljenja od 20% cena robe je 90 din. Koliko je iznosila cene te robe pre poskupljenja? 8. Od 120 kg voća 25% je trulo. Koliko kg voća je za upotrebu? 9. Na šahovskom turniru 64% učenika se kvalifikovalo za dalje takmičenje. Koliko je takmičara učestvovalo na turniru ako se 18 nije kvalifikovalo za dalje takmičenje? 10. U 220g vode sipano 20 g limunovog soka i 10 g šećera, odredi procenat limunovog soka u mešavini?