Question

240km covers 60 km per hrs and 80 km is covered by 40 km per hours so what is avarage speed?​

Answer 1

Answer:

Speed of a body is the distance covered by the body in unit time.

Step-by-step explanation:

Answer 2

Given

Jagan covered 240 km distance by a car at 60 km/h

He travelled 80 km distance by train at 100 km/h

He travelled 200 km distance by a bus at 50 km/h

Hence,

Total distance travelled by Jagan =240km+80km+200km

=520km

Now, total time taken by during whole journey is shown below

Time taken by car =240km/60km/h

=4 hours

Time taken by a train =80km/100km/h

=4/5 hours

Time taken by bus =200km/50km/h

=4 hours

So, total time taken =4+4/5+4

=(20+4+20)/5

We get,

=44/5 hours

Hence,

Average speed = total distance / total time

=520km/(44/5) hours

=[(520×5)/44]km/h

=(130×5)/11km/h

=650/11km/h

=59

11

1

km/h

Hence, the average speed during the whole journey is

59

11

1

km/h