Question

The train has a speed of 60km hr for first hour the 40 km/hr for next half hour what is the average speed

Answer 1

Heya

Speed = Distance/time

For the first one hour,

60= distance/1

Distance travelled = 60kms

For the next half an hour,

40 = Distance/(1/2)

Distance = 40(1/2)

Distance =20kms

Average speed = total distance/ total time

= 60+20/1+(1/2)

=80/(3/2)

= 80×2/3

= 53.33 kmph

Hope it helps ^_^