A person covers a distance 'd' km from 'A' to 'B' with 20 km /h and returns through the same path from 'B' to 'A' with 30 km/h.The average speed of person's trip
25km/h
24km/h
20km/h
30km/h
Answers
Answered by
0
Answer:
24km/h.
Explanation:
Average speed = total distance /total time
total distance = x + x = 2x
time from A to B = distance / velocity= x /20
time from B to A = distance/velocity = x /30
total time = x/20 + x/30
= 50 x /600
now,
Average speed = total distance / total time
= 2x/50x/600
= 1200x/50x
= 1200/50 = 24km/h.
Answered by
2
Answer:
it's 24 km/ h
Explanation:
average velocity = (2×V1V2)÷v1+v2
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