Question 962534
You have two equations:
{{{y=45x+5}}}
{{{y=55x}}}
The first equation is how far A has travelled, and the second is how far B has travelled. Substitution gives
{{{55x=45x+5}}}
{{{10x=5}}}
{{{x=1/2}}}
The cars will meet each other after half an hour of driving.