He received 10 special bills because 25 - 15 = <<25-15=10>>10

He has 80% of them left because 100 - 20 = <<100-20=80>>80

He has 8 left because 10 x .8 = <<10*.8=8>>8

His parents will give her $12 for them because 8 x 1.5 = <<8*1.5=12>>12

# Answer

12
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
George is about to celebrate his 25th birthday. Since his 15th birthday, he's been given a special $1 bill from his parents. They told him that on his 25th birthday, for every bill he still has, they will give him $1.5 in exchange. He spent 20% of his special bills. How much will he receive from his parents when he exchanges them?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
12
George is about to celebrate his 25th birthday. Since his 15th birthday, he's been given a special $1 bill from his parents. They told him that on his 25th birthday, for every bill he still has, they will give him $1.5 in exchange. He spent 20% of his special bills. How much will he receive from his parents when he exchanges them?
train