Question

6. 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: (a) three times as much, (b) twice as much, (c) the same, (d) half as much, (e) a third as much​

Answer 1

given:

first trip= 50 miles.

second trip= 300 miles.

to find:

his new time compared to the old time.

solution:

Let speed of the 1st trip x miles / hr. and speed of the 2nd trip 3x / hr.

Speed = Distance/Time

So, times taken to covered a distance of 50 miles on his first trip = 50/x hr.

= 100/x hr

Therefore, his new time compared with the old time was twice as much.

answer= b) twice as much