Question

a man walks 6 km at 12 km\h and retuns at 10 km/h find the average speed​

Answer 1

Answer:

A ------------------------------- B

suppose this is the distance of 6km

from A to B

distance = 6km

speed = 12km/h

time taken = 6 /12

= 0.5 h

from B to A

distance = 6km

speed = 10km/h

time = distance/ speed

= 6/10

= 0.6 h

average speed = total distance covered/ total time taken

= (6 +6) /( 0.5 + 0.6)

= 12 /1.1

= 10.90km/h

Answer 2

Answer:

8km/h

Step-by-step explanation:

2v1v2/v1+v2

2×6×12/18

144/18

8km/h=avg.speed

Here's your answer.