On the third day, Jen had half of the second day’s cookies left, so on the second day, she had 8 * 2 = <<8*2=16>>16 cookies.

On the second day, she had 1/4 of the first day’s cookies left, so she started with 16 * 4 = <<16*4=64>>64 cookies in the bag.

# Answer

64
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Jen bought a bag of cookies and ate three-quarters of the bag that day. The next day, she ate half of the remaining cookies. She has 8 cookies left on the third day. How many cookies were in the bag to start?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
64
Jen bought a bag of cookies and ate three-quarters of the bag that day. The next day, she ate half of the remaining cookies. She has 8 cookies left on the third day. How many cookies were in the bag to start?
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