SOLUTION: Mary spent half of her allowance going to the movies. She washed the family car and earned 8 dollars. What is her weekly allowance if she ended up with 18 dollars?

Question 1045504: Mary spent half of her allowance going to the movies. She washed the family car and earned 8 dollars. What is her weekly allowance if she ended up with 18 dollars?

Found 3 solutions by josmiceli, josgarithmetic, advanced_Learner:
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!
Let = her weekly allowance
She spent , so she has left
Then she added , so I can say:

Her weekly allowance is $20
------------------------
check answer:

OK
Answer by josgarithmetic(39616)   (Show Source): You can put this solution on YOUR website!
x, her allowance quantity

Amount IN - Amount Out = Amount Held

Answer by advanced_Learner(501)   (Show Source): You can put this solution on YOUR website!
initially she had x
1/2x movies
x-1/2x=1/2x remaining
1/2x+8=18
1/2x=10
x=20$
check
20$
10$ on movies
remaining 20-10=10$
10+8=after washing the car
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