David covered a distance of 50 miles on his first trip. On a later trip he traveled 150 miles while going three times as fast. His new time compared with the old time was:  Choose the correct answer.
A) twice as much	B) three times as much	C) the same	D) half as much	E) a third as much
Let t be the time of the first trip.   On the later trip, David can travel 150 miles in time t.   The answer is the same.
<result>C</result>
David covered a distance of 50 miles on his first trip. On a later trip he traveled 150 miles while going three times as fast. His new time compared with the old time was: