Question

A boy covers a distance of 1.2 km in 40 min what is his speed in km/h​

Answer 1

Final Answer:

The speed of the boy who covers a distance of 1.2 km in 40 min is $1.8$ km/h.

Given:

A boy covers the distance of 1.2 km in 40 min.

To Find:

The speed of the boy is to be calculated in km/h.

Explanation:

The term "speed" is calculated by dividing the covered distance by the time elapsed.

With this concept, You can calculate the speed of any non-living objects like train, car, etc. and also that of the living beings like a boy, a girl, a tiger, etc.

Since, the speed, here, is to be calculated in km/hour, it is important to know the following relation of the hour and the minute.

$1$ hour is equal to $60$ minutes.

Step 1 of 2

Note that in $40$ minutes the distance covered is $=1.2$ km.

Now, divide this distance by $40$ to get the following.

In $1$ minute time, the distance covered is $=\frac{1.2}{40}$ km.

Step 2 of 2

Multiply $60$ with the above evaluated distance and simplify the mathematical expression.

It follows that in $60$ minutes the distance covered, in km is

$=\frac{1.2}{40}*60\\=\frac{1.2}{2}*3\\=0.6*3\\=1.8$

Therefore, the required speed of the boy who covers in 40 min the distance of 1.2 km is $1.8$ km/h.

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