Question

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 ?

Answer 1

Let it be x

He spent x/2 dollars then

`\\ \sf\longmapsto (x)/(2)+8=13`

`\\ \sf\longmapsto (x+16)/(2)=13`

`\\ \sf\longmapsto x+16=13(2)=26`

`\\ \sf\longmapsto x=(26)/(16)`

`\\ \sf\longmapsto x=(13)/(8)`

`\\ \sf\longmapsto x=1.6\$`

`\\ \sf\longmapsto Weekly allowance=13+7(1.6)`

`\\ \sf\longmapsto 13+112=125`

Answer 2

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