Question

A train travels between two stations A and B .While going from A to B it's speed =20 km/hr and while coming back it's speed = 30km/hr .Find the average speed​

Answer 1

Answer:

LET THE DISTANCE BE x

first case (while going from a to b)

distance=x km

speed=20 km /hr

time=x/20 hr

SECOND CASE (WHILE RETURNING )

distance =x cam

speed=30 km/ hr

time=x/30 hr

average speed =x +x/x/20+x/30=24 km/ hr

Step-by-step explanation: