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A normal train from Chennai to Bangalore takes 6 hours 10 minutes. The Shatabdi express takes 4 hours 45 minutes. How much time do you save by travelling on the Shatabdi?

Answer
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Hint: In this particular question use the concept that the time saved by us by travelling in the Shatabdi is the difference of time taken by the normal train and the Shatabdi express, and use the concept that in 1 hour these is 60 minutes, so use these concepts to reach the solution of the question.

Complete step by step answer:
Given data:
A normal train from Chennai to Bangalore takes 6 hours 10 minutes.
Let it be denoted by ${t_1}$.
So, ${t_1} = $6 hours 10 minutes.
And the Shatabdi express takes 4 hours 45 minutes.
Let it be denoted by ${t_2}$.
So, ${t_2} = $4 hours 45 minutes.
Now we have to find out the time saved by travelling in the Shatabdi.
As we know that in 1 hour there is 60 minutes.
Therefore, 1 hour = 60 minutes.
So, 6 hours = 6 (60) = 360 minutes.
So 6 hours 10 minutes = 360 + 10 = 370 minutes.
$ \Rightarrow {t_1} = 370$ Minutes.
And 4 hour = 4 (60) = 240 minutes.
So 4 hour 45 minutes = 240 + 45 = 285 minutes.
$ \Rightarrow {t_2} = 285$ Minutes.
Now the time saved by us by travelling in the Shatabdi is the difference of time taken by the normal train and the Shatabdi express.
Therefore, time saved = time taken by the normal train – time taken by the Shatabdi express.
So, time saved = 370 – 285 = 85 minutes.
85 minutes is also written as, (60 + 25) which is equal to 1 hour and 25 minutes.
So the time saved by travelling in the Shatabdi = 1 hour and 25 minutes.

So this is the required answer.

Note: Whenever we face such types of questions the key concept we have to remember is that in 1 hour there is 60 minutes, so using this convert both of the time taken by the respective trains into minutes as above, then subtract them as above then again convert into hour we will get the required time saved by travelling in the Shatabdi express.