Question

Your friend sells half her stock of keyrings every hour. She has 24 boxes at the of the sale. How many boxes will she have left after 3 hours?

Answer 1

At 0 hours: 24 boxes
After 1 hour: 24/2 = 12 boxes
After 2 hours: 12/2 = 6 boxes
After 3 hours: 6/2 = 3 boxes

She will have 3 boxes after 3 hours.

Hope this helps :)