Question

a train travels for 30 minute with a velocity of 36 km per hour and then for 40 minutes with a velocity of 54 km per hour in same direction find the average velocity of train for entire journey​

Answer 1

Answer:

the average velocity is 46.2 kph

Explanation

Distance covered in 30 mins= 36/2 = 18 km = 18000 meters

Distance traveled in next 40 mins = 54 x 2/3 = 36 km = 36000 m.

time taken = 70 mins = 4200 seconds.

Average velocity = (18+36) / (7/6) = 46.2 kph

Hence the average velocity is 46.2 kilometers per hour.