I have the table and the equation set up i just don't know how to solve it from there!
-A long distance trucker traveled 120mi in one direction during a snowstorm. The return trip in rainy weather was accomplished at double the speed and took 3hr less time. Find the speed he was going.

Question

I have the table and the equation set up i just don't know how to solve it from there! 
-A long distance trucker traveled 120mi in one direction during a snowstorm. The return trip in rainy weather was accomplished at double the speed and took 3hr less time. Find the speed he was going.

bekkah323 · Answer

Snow: D=120 R=r t=t
Rain: D=120 R= 2r t=t-30
D=rt
snow: 120=rt
Rain: 120=2r(t-30)