Respuesta :

ak909

Answer:

5 binders

Step-by-step explanation:

3 times 5 binders would be 15$, and since he paid with 20$, that is 5 dollars change

As an algbraic equation:

3x+5=20

3x=15

x=5
He would have bought 5 binders. If he got $5 back that would be $20-$5=$15, if each binder cost $3 then 15 divided by 3 equals 5

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