The train travels 135 km from the village to the city at an average speed of 54 km / h and makes five five-minute stops.

The train travels 135 km from the village to the city at an average speed of 54 km / h and makes five five-minute stops. How long does it take for the train to travel from the village to the city?

1. Suppose that the speed of 54 km / h is the average speed of the electric train while moving. If you use the formula T = S / V, in which T is the time, S is the distance, and V is the speed of the train, then you can find the time that the train was moving. Let’s calculate:
T = 135/54 = 2.5 (h).
2. The train still made 5 stops for 5 minutes. Let’s find how long the train was standing:
5 * 5 = 25 (min.).
Let’s convert 25 minutes into hours (1 hour = 60 minutes):
25/60 = 5/12 (h).
3. Let’s find the time spent by the train for the entire journey:
2.5 + 5/12 = 5/2 + 5/12 = 30/12 + 5/12 = 35/12 = 2 and 11/12 (h).
Answer: the train will run from the village to the city in 2 and 11/12 hours.