A boy walks to his school which is at a distance of 3 km from his home in 30 minutes. On
reaching he finds that the school is closed and comes back by a bicycle with his friend and reaches
home in 20 minutes. Calculate his average speed in km/h.
Answers
Answered by
2
Answer: The average speed of boy is 7.2km/hour
hope this will help you and please mark the answer as brilliant.
Answered by
1
Explanation:
Speed = Distànce/Time
Time (1) = 30/60
= 1/2
Speed = 3÷1/2
= 6 km/hr
Time (2) = 20/60
= 1/3
Speed = 3÷1/3
= 9 km/hr
Average = 6 + 9 / 2
= 15/2 or 7.5 Answer
Hope this helps
Similar questions