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? Give me reasons, before answering the question
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 final answer is 64.