###Human: 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?, ### Assistant: On the third day, Jen had half of the second day’s cookies left, so on the second day, she had 8 * 2 = 16 cookies.
On the second day, she had 1/4 of the first day’s cookies left, so she started with 16 * 4 = 64 cookies in the bag. 
 So the answer is :  64