SOLUTION: A bus leaves from Ludhiyana every 4 hours. Announcement was made 20 minutes after the bus left for Ludhiyana. Next bus will leave at 4:30 pm. What time is this announcement made?

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Question 1024529: A bus leaves from Ludhiyana every 4 hours. Announcement was made 20 minutes after the bus left for Ludhiyana. Next bus will leave at 4:30 pm. What time is this announcement made?
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
the bus leaves every 4 hours.

next bus leaves at 4:30 pm.

that means that this bus left at 12:30 pm.

the anouncement was made 20 minutes later, so the announcement had to be made at 12:50 pm.