A flight to Mumbai leaves every 5 hours. At the information counter I learnt that the flight took off 25 minutes before. If the time now is 10:45 a.m., what is the time for the next flight?

Let's calculate based on the current time:
1. Current Time = 10:45 a.m.
2. The last flight took off 25 minutes ago, so the departure time of the previous flight was:

$$10:45\text{ a.m.}-25\text{ minutes}=10:20\text{ a.m.}$$

3. Flights leave every 5 hours, so the next flight will depart 5 hours after the previous one:

$$10:20\text{ a.m.}+5\text{ hours}=3:20\text{ p.m.}$$