Question

a motor car covers 1/3 part of total distance with velocity V1 = 10km/hr and second 1/3 part with velocity V2 = 20km/hr and rest 1/3 part with velocity V3 = 60km/hr . What is the average speed of the car ?

Answer 1

Average speed of the car = (V1+V2+V3)/3

Answer 2

now can u?

Answer 3

Avg speed = 10+20+60 / 3
= 90/3
= 30km/hr
correct ?

Answer 4

very correct

Answer 5

u got it?

Answer 6

why the velocities / 3 ?

Answer 7

Actually it was like this:
Average speed of the car = 1/3 V1 + 1/3 V2 + 1/3 V3
= (V1+V2+V3)/3

Answer 8

got it?

Answer 9

oh okay .. thanks :)