Question

A man goes to office at 30 m/s and returns at 20 m/s. Find his average speed.​

Answer 1

Answer:

24 m/s

Explanation:

30 = d /t

20 =d/t

t¹= d/30

t²=d/20

total time = d/30+d/20 = 5d/60

avg speed = d/t

substitute the total time in t ,

d/5d/60

60 goes up and the answer is 24 m/s