A car travels with a speed $12m{s}^{-1}$, while a scooter travels with a speed $36km{h}^{-1}$. Which of the two travels faster ?

Speed of car = $12m{s}^{-1}$
Speed of scooter = $36km{h}^{-1}$

Since, $1km=1000m$
and, $1hr=3600sec$

$\therefore$ Speed of scooter =  $36km/hr=\frac{36\times 1000}{3600}m/s$ = $10m{s}^{-1}$

Hence, the car travels faster than the scooter.