Answer:
04:06 PM
Step-by-step explanation:
Beth met her friend at 04:30 PM that means she reached library at that time. As it is mentioned that it takes her 24 minutes to walk from home to library.
Since she reached library at 04:30, we have to subtract 24 minutes out of 04:30 (Go 24 minutes back) to get the time when she left the home.
So,
subtracting 24 gives us 04:06 PM.
Beth left her home at 04:06 PM ..