airnike615
contestada

Benny spent half of his allowance going to the movies. He washed the family
car and earned 8 dollars. What is his weekly allowance if he ended with
13 dollars ?

Respuesta :

nooschool69
if he got paid $8 then you’d have to do 13-8=5 and then double it so that gives you 10

Let it be x

He spent x/2 dollars then

[tex]\\ \sf\longmapsto \dfrac{x}{2}+8=13[/tex]

[tex]\\ \sf\longmapsto \dfrac{x+16}{2}=13[/tex]

[tex]\\ \sf\longmapsto x+16=13(2)=26[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{26}{16}[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{13}{8}[/tex]

[tex]\\ \sf\longmapsto x=1.6\$[/tex]

[tex]\\ \sf\longmapsto Weekly allowance=13+7(1.6)[/tex]

[tex]\\ \sf\longmapsto 13+112=125[/tex]

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