Let Tiberius time is xhr. He drives 72 miles. So his rate is 72/x mi/hr
Claudius walks 32 miles and her time is x+2. So her rate is 32/(x+2)
Rate of tiberius is 3 times of Claudius.
So the equation is 72/x=3*32/(x+2)
simplifying , 3/x=4/(x+2)
Solving for x=6
The rate of Claudius is 32/8=4mi/hr
The rate of T=72/6=12mi/hr