Question

A can run 22.5 m while B runs 25 m. In a kilometre race B beats A by:

• A. 100 m
• B. $111\frac{1}{9}m$
• C. 25 m
• D. 50 m

Answer 1

The correct option is A 100 m

When B runs 25 m, A runs $\frac{45}{2}m.$
When B runs 1000 m, A runs $\left(\begin{array}{c}\frac{45}{2}\times \frac{1}{25}\times 1000\end{array}\right)m=900m.$
$\therefore$ B beats A by 100 m.