Question 997238
Right triangle with the Right angle at departure point.


Speeds are r and r+5, and the time quantity is 2 hours, and the hypotenuse is 50 kilometers.


Pythagorean Theorem Formula for the description's Right Triangle:   {{{(r*2)^2+((r+5)(2))^2=50^2}}}


The question is not very clear.  It seems to mean  the average of r and r+5.  This would be, before solving for r,
{{{(r+(r+5))/2}}}.