Cars motion

From point A car start at the speed of 90 km/h. Against it departs from the point B at the same time another car at 60 km/h. For how long and where they met if the distance between A and B is 180 km?

Correct result:

t =  1.2 hod
x(A) =  108 km

Solution:

$t=180\mathrm{/}(90+60)={\displaystyle \frac{6}{5}}\text{ hod}=1.2\text{ hod}$

$x(A)=90\cdot 1.2=108\text{ km}$

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