Question

The ratio between $\text{2 km}$and $\text{5 m}$ is

• A. $2:5$
• B. $5:2$
• C. $400:1$
• D. $1:400$

Answer 1

The correct option is C

$400:1$

Step:Explanation for correct option.

option-$\mathrm{C}$:$(400:1)$

To find the ratio of $\text{2 km}$and $\text{5 m}$, both the numbers must be in same units.

Converting $\text{2 km}$ in $\text{m}$, we get

$$\begin{gathered} \text{⇒1 km = 1000 m} \\ \text{⇒2 km = 2×1000=2000 m} \end{gathered}$$

Now, Ratio of $\text{2 km}$and $\text{5 m}$ $=\frac{2000}{5}=\frac{400}{1}=400:1$

Therefore, the ratio of $\text{2 km}$and $\text{5 m}$ is $400:1$

Hence, option C is correct answer.