Mathématiques

Question

Bonsoir [Math-Anglais]
In the bookshop , Bryà buys 3 exercises books at 4$ each and 5 folders . he spends 42$
A( Write annequations to allow you calculate the price of a folder
B solve this equatopn and give the price of a folder
Merci d’avance

2 Réponse

  • Bonsoir ( Hi ) !
    a. ( 4$ × 3 ) + 5x = 42 $
    b.( 4$ × 3 ) + 5x = 42$
    12$ + 5x = 42$
    42 - 12 = 30
    The Price of a folder is :
    30 ÷ 5 = 6$
    Bonne soirée ( Good night ) !
  • A) 3*4+5x = 42
    5x+12 = 42

    B) 5x+12 = 42
    5x = 30
    x = 30/5
    x = 6

    The price for one folder is 6$.

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