Introduction to Rates

We already know the unit rate (how much of something per one unit), which is 4 meters per second. In order to find the # of seconds to run 52 meters, all we need to do is to divide 52 by 4 to get the number of seconds, which is $13$ .

$52\div4 = 13$

$4 = \dfrac{52}{t} \implies \boxed{t=13}$

The distance traveled by Alice increases by $4$ meters every single second.

If Alice has traveled $52$ meters, then she must have taken $52\div 4= \boxed{13}$ seconds to travel.