Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
How many seconds are there in 2.5 hours?
In ##2.5## hrs. there are ##9000## seconds.
There are ##60## minutes in an hour and ##60## seconds in each minute.
therefore, there are ##60xx60=3600## seconds in each hour.
Hence in ##2.5## hrs. there are ##3600xx2.5=9000## seconds.