A bus starts from Howrah at 9 : 00 hours and reaches Burdwan at 11 : 1 0 hours. How much time does the bus take to reach Burdwan?

Hint: The time of reaching the destination and starting the journey of a train are given. The difference between these times ( in terms of hours and minutes ) will give us the time taken by the bus to reach Burdwan

Complete step-by-step answer:
Starting time of the bus from Howrah = 9 : 00 hours
In terms of hours and minutes, it can be written as:
9 hours and 0 minutes _____ (1)
Reaching time of the bus at Burdwan = 11 : 1 0 hours
In terms of hours and minutes, it can be written as:
11 hours and 10 minutes _____ (2)
The time taken by bus to reach Burdwan is the difference between the reaching time and starting time i.e. (2) – (1)
We will subtract hours from hours and minutes from minutes and then calculate the final time:
$
\Rightarrow Hours: 9 hours – 11 hours
               = ( 9 – 11 ) hours
               = 2 hours $
$
\Rightarrow Minutes: 10 mins – 0 mins
               = ( 10 – 0 ) mins
               = 10 mins $

Combining we get:
2 hours and 10 minutes
Therefore, the bus took 2 hours and 10 minutes to reach Burdwan.

So, the correct answer is “Option C”.

Note: We always carry out a subtraction between like quantities that mean hours can be subtracted only from hours only and not minutes and vice – versa. We can also carry out the conversions wherever necessary knowing that 1 hour = 60 minutes.
The given times are generally seen in the digital clocks where the 24 – hour format is followed.