Question

In the $1908$Olympic Games, the Olympic marathon was lengthened from $40\mathrm{kilometers}$ to approximately $42\mathrm{kilometers}$. Of the following, which is closest to the increase in the distance of the Olympic marathon, in miles? ($1\mathrm{mile}$ is approximately $1.6\mathrm{kilometers}$).

• A. $1.00$
• B. $1.25$
• C. $1.50$
• D. $1.75$

Answer 1

The correct option is B

$1.25$

Explanation for correct option:

Finding closest to the increase in the distance of the Olympic marathon:

As the Olympic Marathon lengthened from $40\mathrm{kilometers}$ to approximately $42\mathrm{kilometers}$.

So, the difference in the length$=42-40$

$=2\mathrm{kilometers}$

As, $1.6\mathrm{kilometers}=1\mathrm{mile}$

So, $2\mathrm{kilometers}=\frac{2}{1.6}$

$\approx 1.25\mathrm{miles}$

Hence, the correct option is (B).