Question

man how many seconds are there in 2 and a half 3 of 2 hours

Answer 1

2 Hours =
7,200 Seconds

2 hrs 20 mins=
7,200 + 1200 seconds
=8400 seconds

Answer 2

In a minute there are 60 seconds.
This means that in an hour there are 60×60=3600seconds.

⇒$3600*2=7200$sec
⇒$\frac{3600}{2}=1800$
⇒$3600+1800=5400$

Therefore there are 5400 seconds in 2 and a half hours.