Question

a car travels hundred kilometre at a speed of 60 km per hour and returns with a speed of 40 km per hour calculate the average speed for the whole journey​

Answer 1

Answer:

50km/hr

Step-by-step explanation:

average speed of an object that travels

different distances in equal time=speed 1+speed 2+...../no. of different speeds which were travelled by an object

so according to the problem speed 1=60 km/hr. speed 2=40km/hr so average speed = 60 +40 /2

= 100/2

= 50km/hr