Question 995139
t, time if arrival point is satisfied as normal time.


<pre>
                   speed     time        distance
Trip late          2.5       t+1/10       d
Trip early         3.5       t-1/10       d
</pre>

The two unknowns in the system of equations are d and t.
{{{system((2.5)(t+1/10)=d,(3.5)(t-1/10)=d)}}}