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Roses per sant Jordi

Roses per sant Jordi.

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Roses per sant Jordi

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  1. Roses per sant Jordi

  2. Cada any per Sant Jordi els alumnes de 4t d’ESO d’ una escola venen roses per recaptar diners per a un viatge. Els alumnes de l’ any passat en van vendre 700; aquest any només n’ han encarregat 500 però calculen que si les venen totes augmentant en un euro el preu de l’ any passat, aconseguiran la mateixa recaptació. A quin preu pensen vendre les roses aquest any?

  3. X= preu de l’ any passat 700 roses venudes l’ any passat 500 roses encarregades aquest any

  4. 700X= 500(X+1) • 700X= 500X+500 • 700X-500X= 500 • 200X=500 • X= 500 = 2,5€ • 200 • X=2,5 . 2,5 preu de les roses de l’ any passat 2,5+1=3,5

  5. Aquest any les roses es vendran a 3,5€ I l’ any passat es van vendre a 2,5€ 700 · 2,5 € = 500 · 3,5€ 1750 € = 1750 € És la mateixa recaptació

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