Answer: The average drop is $8.80 per day.
Step-by-step explanation: Over the course of 8 days the stock fell by $72, and then $4 and $12 on the following two days. In order to determine the average over 10 days you need to add up the total drop for the time period and then divide by 10.
The formula to use:
(72 + 4 + 12) / 10=
88 / 10=
8.8=
$8.80