Ravi walks at the uniform rate of 5 km/hr.
Question:

Ravi walks at the uniform rate of 5 km/hr. What distance would he cover in 2 hours 24 minutes?

Solution:

Let x km be the required distance covered by Ravi in 2 h 24 min.

Then, we have:

$1 \mathrm{~h}=60 \mathrm{~min}$

i. e., $2 \mathrm{~h} 24 \mathrm{~min}=(120+24) \mathrm{min}=144 \mathrm{~min}$

 Distance covered (in km) 5 x Time (in min) 60 144

Clearly, more distance will be covered in more time.

So, this is a case of direct proportion.

Now,$\frac{5}{60}=\frac{x}{144}$

$\Rightarrow x=\frac{5 \times 144}{60}$

$\Rightarrow x=12$

Therefore, the distance covered by Ravi in 2 h 24 min is 12 km.