The first part of a trip driving at 40 mph was 15 miles longer and took 30 minutes longer than the second part of the trip driving at 50 mph. What I'd the distance traveled?

Step-by-step explanation:

Let assume that both trip occured at constant speed. Then, the definition of speed as the ratio of travelled distance to time is used in terms of the statement:

First trip:

Second trip:

After some algebraic handling, the following linear system is created:

The solution of the linear system is:

The distance travelled in both trips is:

a) justify

step-by-step explanation:

justifying is just part of everyday life. justify kind of means proof so i think the answer is a) justify.

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.