Mallory decides to spend 3 hours working overtime rather than watching a video with her friends She earns 8 an hour Her opportunity cost of working is?

Mallory's opportunity cost of working is the value of what she foregoes by not watching the video with her friends. Since she spends 3 hours working at a rate of $8 per hour, she earns $24 for that time. Additionally, the enjoyment and social interaction she misses out on by not spending time with her friends also contribute to her opportunity cost. Therefore, her total opportunity cost includes both the $24 earned and the intangible benefits of friendship and leisure.