Question

A concert lasted for 3 hours 15 minutes .If the concert ended at 23:55 hours, at what time did the concert start.

Answer 1

Hint:This question is based on the knowledge of the clock. Here the total time is taken as 24 hours for a day. So what we will do is that we will subtract the given time duration of the concert from the ended time to the time when the concert starts.

Complete step-by-step answer:
In the question ,it is given the ending time and the duration for which the concert was held.
In the question the 24 hour format has been used.
In this format 00:00 corresponds to 12 AM and 12:00 corresponds to 12 PM and after this the time is written as 13:00 and soon.
The ending time of the concert =23:55
Duration for which the concert held = 3hours 15 minutes.
It means that the concert started 3hours 15 minutes before 23:55.
The starting time of concert is calculated by subtracting the duration for which the concert was held from the given time.
So, the starting time of concert is given as:
Starting time of concert = ending time – duration for which the concert was held.
                                       = 23 hours 55 min – 3 hours 15 min
                                       = 20 hours 40 min
Therefore, the concert starts at 20:40

Note : In this type of question, you should know about the 24 hour format. You should know that 23:55 can also be written as 23 hours and 55 minutes. The answer can also be written in 12 hour format as 8:40 PM