Question

a vehicle travels at a speed of 60km in the first 4hrs then travels next 4 hrs at a speed of 80km again moves forward 2hrs at the speed of 40 km find the average speed of vehicle​

Answer 1

Answer:

64km/hr

Step-by-step explanation:

60*4=240

80*4=320

40*2=80

In total its 640 kms in 10 hours

So average speed= 64 km/hr

Answer 2

Answer:

18.3 km/hr

Step-by-step explanation:

distance ( d1)=60*4

=240 km

Similarly,

d2=80*4

=320 km

d3=40*2

=80 Km

Total Distance=240+320+80=640

Total Time= 4+4+2=10 hrs

We know that,

Speed= Distance / Time

=640/10

=64

Therefore, Speed is 64 km/hr