Question

A boy runs one Kilometre in 12 minutes . How long will he take to run 400 metre.
Options ;
a: 4 minutes 48 seconds
B: 5 minutes
c: 6 minutes
D: 12 minutes
​

Answer 1

The answer is a. 4.8 minutes

Answer 2

As per the data given in the question,

In the above question, it is given that,

Given A boy runs one Kilometre in 12 minutes.  

Here we have to find how long a boy will take to run 400 metres.  

We have to calculate the time for 1 meter.

Thus, the time taken to run 1 meter is,

1kilometre =1000metre

$=\frac{12}{1000} \\=0.012$

Therefore time taken to run 400metre is,

$=0.012\times 400\\=4.8minutes$

Hence the boy required 4.8 min to run 400 meters.