Question

2. A man covers a distance of 40km.He covers first 10km at 10km/h, second 10 km at
20km/h, third f Okm at 30km/h and last 10km at 40km/h. What is the average speed of
man?
(a) 18.2 km/h (b) 19.2 km/h (C) 19.0 km/h (d) 16.2 km/h​

Answer 1

Answer:

Average Speed =

x+y

2xy

⇒

30+40

2×30×40

=

7

240

=34.3km/h