Question

a train takes 2 hr to reach station B from station A and then 3 hr to return from station B to station A.the distance between two station 200km.find the average speed​

Answer 1

Answer:

The average speed of the train is 80 km/hr.

Step-by-step explanation:

Given :

• A train takes 2 hr to reach station B from station A and then 3 hr to return from station B to station A.
• The distance between two stations is 200 km.

To find :

the average speed

Solution :

Average speed is calculated by dividing the total distance travelled by the object by the total time taken.

  $\longrightarrow \rm Average \ speed=\dfrac{total \ distance \ travelled}{total \ time \ taken}$

The total distance travelled by the train :

= distance travelled from station A to station B + distance travelled from station B to station A

= 200 km + 200 km

= 400 km

The total time taken by the train :

= time taken to travel from station A to station B + time taken to travel from station B to station A

= 2 hr + 3 hr

= 5 hr

The average speed :

= total distance travelled/total time taken

= 400 km/5 hr

= 80 km/hr

Therefore, the average speed of the train is 80 km/hr.