With what speed should a bus travel so that it can cover a distance of 10 km in 5 min?

$60$ $min$ = $1hour$
$5$ $min$ = $\frac{1}{60}\times 5=\frac{1}{12}h$

$Speed$ = $\frac{Distance}{Time}$

$Distance=10km$

$time=\frac{1}{12}h$

$speed$= $\frac{10}{\frac{1}{12}}$ = $10\times 12$
           = $120$ $km/h$