Question

a boy runs for 20 minutes at a uniform speed of 18 km per hour at what speed should he Run for the next 40 minutes so that the average speed comes 24 km per hour

Answer 1

Answer:

The boy should run with a speed of 27 km/h for next 40 minutes.

Explanation:

Given that,

Time t₁ = 20 min =0.33 h

Speed = 18 km/h

Time t₂ = 40 min = 0.67 h

Average speed = 24 km/h

We need to calculate the distance

The distance is the product of the speed and time.

The distance will be after 40 min

Now, The average speed is equal to the total distance divided by total time.

Put the value into the formula

Hence, The boy should run with a speed of 27 km/h for next 40 minutes.

Answer 2

Answer:

hope the answer helps you ^^