Question $19(5$ points$)$

Uisten

Bill is standing on a train station platform that $($measured by him$)$ is $25$ meters in length. Frank is riding on a train that passes the platform and is traveling at $\mathrm{.}5$c$.$ What length does Frank measure for the platform?

$28\mathrm{.}87$ m

$25\mathrm{.}00$ m

$21\mathrm{.}65$ m

$12\mathrm{.}50$ m