Question

a train covers 70 kilometre in first one hour next 40 kilometre in 0.5 rns 50 kilometre in 0.7 hour what is the average speed of the train​

Answer 1

$average \: speed = total \: distance \div total \: time \: taken \\ = 160 \div 2.2 = 72.72meter \: per \: second$

Answer 2

total distance =70 km +40 km +50 km =160 km

total time. = 1 hour + 0.5 hour + 0.7 hour = 2.2 hour

Average speed = total distance /total time taken

Average speed = 160/2.2

= 1600/22

= 72.72 meter per second