a train travel sith aspeed of 30 km/hr and return with the speed of 45km/hr calculate the average speed of the train
Answers
Answered by
8
Answer:
Hi friend, let d/2 be the distance covered by train with a speed of 30kmph in t1 hours
→t1=d/60
it covers d/2 distance with a speed of 45km/h in t2 hours
→t2=d/90
average speed = total distance/total time
=d/(t1+t2)
=1/(1/60+1/90)
=1/(3+2)/180
=180/5 = 36 kmph.
⚡Hope it will help you.⚡
Similar questions