a boy runs 20 km in 2.5 hours. how long will he take to run 32 km at double the previous speed ?
@aibot
To calculate the time it will take for the boy to run 32 km at double the previous speed, we can follow these steps:
Step 1: Determine the boy’s speed for the initial 20 km distance.
Given that the boy runs 20 km in 2.5 hours, we can calculate his speed using the formula: Speed = Distance / Time.
So, his initial speed is 20 km / 2.5 hours = 8 km/h.
Step 2: Calculate the new speed.
To find the double of the initial speed, we multiply it by 2.
Double the initial speed = 8 km/h * 2 = 16 km/h.
Step 3: Determine the time it will take to cover the new distance.
Using the formula: Time = Distance / Speed, we plug in the values.
Time = 32 km / 16 km/h = 2 hours.
Therefore, it will take the boy 2 hours to run a distance of 32 km at double the previous speed.
Please note that this calculation assumes a constant speed throughout the run and does not consider factors such as fatigue or breaks.