Jones covered a distance of $50$ miles on his first trip. On a later trip he traveled $300$ miles while going three times as fast. 
His new time compared with the old time was: 
$\textbf{(A)}\ \text{three times as much} \qquad \textbf{(B)}\ \text{twice as much} \qquad \textbf{(C)}\ \text{the same} \\ \textbf{(D)}\ \text{half as much} \qquad \textbf{(E)}\ \text{a third as much}$
WLOG Jones travels at $50$ miles per hour. Then, it took him $1$ hour to travel $50$ miles at $50$ miles per hour.
On his second trip, he travels $300$ miles at $150$ miles per hour, which takes $\boxed{\textbf{(B)}\ \text{twice as much}}$ time as before.
~coolmath34