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1.Dužinu od 36 m podeli u odnosu 4:5.
2. Podeli broj 189 na tri dela u razmeri 2:3:4.
3. Obim trougla је 108 cm. Odredi dužinu njegovih stranica ako se one odnose kao
3:4:5.
4. Za 4,5m nekog štofa plaćeno je 19800 dinara. Koliko treba platiti za 7m istog štofa
(i iste širine)?
5. Vagon pun džakova cementa istovarila su 3 radnika za 12 časova. Za koliko časova
bi to isto učinilo 4 radnika?
6. Za isplatu ličnog dohotka za 6 radnika treba 450 000 dinara. Koliko radnika
učestvuje u poslu, ako im je isplaćeno ukupno 12 600 000 dinara na ime ličnog
dohotka (svi imaju iste lične dohotke)?
7. Čokolada od 150 grama plaćena je 480 dinara. Od koliko grama je čokolada čija
je cena 1280 dinara?
8. Za jedno odelo treba 3 m štofa širine 140 cm. Koliko štofa širine 80 cm treba za to
isto odelo?
9. Razgovaraju u prodavnici kupac i prodavac: Kupac: „Kolika je cena ovog komada
salame?” Prodavac: „Ovaj komad od 1 kg i 650 g staje 3060 dinara”. Kupac:
„Odsecite mi komad za 1530 dinara”. Koliko je salame dobio kupac?
10. Šest kamiona za 8 sati vožnje potroši 512 litara nafte. Koliko nafte će potrošiti
takvih devet kamiona za 6 sati vožnje?
11. Od 10 kg prediva se izatka 18m štofa. Koliko se metara štofa izatka od 35kg
prediva?
12.Jedan posao tri radnika obave za 12 dana. Za koliko dana bi isti posao obavila
četiri radnika?
13.Zupčanik ima 54 zupca i pravi 84 obrtaja u minuti. Koliko zubaca ima zupčanik ako
pravi 126 obrtaja i u prenosu je sa prvim?
14.Cena robe je povećana sa 140 din. Na 161 din. Koliko procenata iznosi povećanje?
15.Posle sniženja cene od 8% cena nekog proizvoda je 276 din. Kolika je bila cena pre
sniženja?
16.Posle poskupljenja od 8% cena nekog proizvoda je 324 din. Kolika je cena pre
poskupljenja?
17.Pri sušenju robe koja je bila teška 3800 kg težina se smanjila za 456 kg.Koliko je to
u procentima?
18.Pri sušenju neka roba izgubi 72% od svoje mase. Koliko treba sveže robe da bi se
dobilo 56 kg sušene?
19U jednoj školi je 400 učenika u junu je sa uspehom završilo 95% učenika, od toga
15% sa odličnim uspehom. Koliko ima odličnih učenika?
20.Posle poskupljenja od 20% cena robe je 90 din. Koliko je iznosila cene te robe pre
poskupljenja?

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Proporcije 6.docx

  • 1. 1.Dužinu od 36 m podeli u odnosu 4:5. 2. Podeli broj 189 na tri dela u razmeri 2:3:4. 3. Obim trougla је 108 cm. Odredi dužinu njegovih stranica ako se one odnose kao 3:4:5. 4. Za 4,5m nekog štofa plaćeno je 19800 dinara. Koliko treba platiti za 7m istog štofa (i iste širine)? 5. Vagon pun džakova cementa istovarila su 3 radnika za 12 časova. Za koliko časova bi to isto učinilo 4 radnika? 6. Za isplatu ličnog dohotka za 6 radnika treba 450 000 dinara. Koliko radnika učestvuje u poslu, ako im je isplaćeno ukupno 12 600 000 dinara na ime ličnog dohotka (svi imaju iste lične dohotke)? 7. Čokolada od 150 grama plaćena je 480 dinara. Od koliko grama je čokolada čija je cena 1280 dinara? 8. Za jedno odelo treba 3 m štofa širine 140 cm. Koliko štofa širine 80 cm treba za to isto odelo? 9. Razgovaraju u prodavnici kupac i prodavac: Kupac: „Kolika je cena ovog komada salame?” Prodavac: „Ovaj komad od 1 kg i 650 g staje 3060 dinara”. Kupac: „Odsecite mi komad za 1530 dinara”. Koliko je salame dobio kupac? 10. Šest kamiona za 8 sati vožnje potroši 512 litara nafte. Koliko nafte će potrošiti takvih devet kamiona za 6 sati vožnje? 11. Od 10 kg prediva se izatka 18m štofa. Koliko se metara štofa izatka od 35kg prediva? 12.Jedan posao tri radnika obave za 12 dana. Za koliko dana bi isti posao obavila četiri radnika? 13.Zupčanik ima 54 zupca i pravi 84 obrtaja u minuti. Koliko zubaca ima zupčanik ako pravi 126 obrtaja i u prenosu je sa prvim? 14.Cena robe je povećana sa 140 din. Na 161 din. Koliko procenata iznosi povećanje? 15.Posle sniženja cene od 8% cena nekog proizvoda je 276 din. Kolika je bila cena pre sniženja?
  • 2. 16.Posle poskupljenja od 8% cena nekog proizvoda je 324 din. Kolika je cena pre poskupljenja? 17.Pri sušenju robe koja je bila teška 3800 kg težina se smanjila za 456 kg.Koliko je to u procentima? 18.Pri sušenju neka roba izgubi 72% od svoje mase. Koliko treba sveže robe da bi se dobilo 56 kg sušene? 19U jednoj školi je 400 učenika u junu je sa uspehom završilo 95% učenika, od toga 15% sa odličnim uspehom. Koliko ima odličnih učenika? 20.Posle poskupljenja od 20% cena robe je 90 din. Koliko je iznosila cene te robe pre poskupljenja?