A boy walks 800m in 20 minutes. Calculate his average speed in km per hour
Question 1 Report
A boy walks 800m in 20 minutes. Calculate his average speed in km per hour
Answer Details
To calculate the average speed of the boy, we need to convert the distance and time to the same units. The boy walked 800m in 20 minutes. To convert minutes to hours, we divide by 60:
20 minutes ÷ 60 = 0.333 hours
Now we can calculate the average speed:
Speed = Distance ÷ Time
Speed = 800m ÷ 0.333 hours
Speed ≈ 2400m/h
To convert meters per hour to kilometers per hour, we divide by 1000:
Speed ≈ 2.4 km/h
Therefore, the boy's average speed is 2.4 km/h.
So the answer is (a) 2.4.
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