Question 884036
Taking the three locations described as colinear, Sam and Jim live 75 miles apart.


Let t = quantity of time until they reach the same spot driving toward eachother.
The sum of their distances traveled would be 75 miles at that time.


{{{65t+40t=75}}}
{{{t=75/105}}}
{{{highlight(t=0.714)}}} of an hour, which is 43 minutes.


More exactly but not practical, 42 minutes 51 seconds.