To find their speeds, you have to make them per hour instead of c hours.
You would divide each by their times, so 
and 
Train A's speed turns out to be 80 mph and Train B's is 88 mph
train B is faster.
Idk why you got it "wrong," I can't see your work, but I'm pretty sure this is how you'd do it :))
The Tang Dynasty ruled over a vast area that stretched from Korea to Northern Vietnam. It even reached west as far as Afghanistan. It took a very organized government to control all of this territory. The Tang established a detailed code of laws and administrative functions.
Britain called them the “Coercive Acts” while America called them the “Intolerable Acts”
The answer is C. he wanted to get the Mississippi River to transport goods
i hope this helps
