Question

A certain vehicle travels 24 km is one hours. At the same speed, how much distance does it cover in 20 minutes?

Answer 1

Given:
Distance travelled by the vehicle in 1 hour = 24 km
We know:
1 hour = 60 min
∴ Distance travelled by the vehicle in 60 min = 24 km

Now,
Let the distance travelled by the vehicle in 20 minutes with the same speed be x km.

Here, speed is constant.
∴ Ratio of the times taken = Ratio of the distances travelled

$$\begin{gathered} \Rightarrow 60:20=24:x \\ =\frac{60}{20}=\frac{24}{x} \\ =\frac{60÷20}{20÷20}=\frac{24}{x} \\ =\frac{3}{1}=\frac{24}{x} \\ \because 24=3\times 8 \\ \therefore x=1\times 8= \end{gathered}$$

Thus, the distance travelled by the vehicle in 20 minutes is 8 km.